Although there are several different types of knowledge, the primary concern of epistemology is propositional knowledge. This is knowledge of facts, knowledge that such and such is the case.

The difference between the three types of knowledge is not as sharp as it might at first appear.

Personal knowledge does seem to involve knowledge of at least some propositions. Simply having met someone is not enough to know them (in the personal knowledge sense); you also have to know a few things about them (in the propositional knowledge sense).

Procedural knowledge also seems to involve some propositional knowledge. If you know how to drive a car (in the procedural knowledge sense) then you presumably know certain facts about driving (e.g. which way the car will go if you turn the steering wheel to the left).

What is important is that propositional knowledge is not enough to give you either personal knowledge or procedural knowledge. Personal knowledge involves acquiring propositional knowledge in a certain way, and procedural knowledge may entail propositional knowledge, but the same propositional knowledge certainly does not entail procedural knowledge.

Whatever the connections between the various types of knowledge there may be, however, it is propositional knowledge that is in view in most epistemology.