Thank you for the opportunity to help you with your question!
The actual cause is the direct result of an action. An actual cause is what "actually" caused the situation.
By comparison, a proximate cause is a result of the actual cause. If the actual cause had not occurred, the proximate cause would not occur either.
The best and oldest analogy is that of a car accident. If you get into a car accident and are injured because your car's safety mechanisms (airbag, seatbelt, etc) are faulty, the car accident is the ACTUAL cause of your injuries. However, the proximate cause is the faulty seatbelt.
Please let me know if you need any clarification. I'm always happy to answer your questions.