So this is a "bonus" question from a past final exam for my Electrical Circuits course. I've spent a good few hours trying to solve it but haven't really had much luck. Any method can be used I figured if I found the voltage of the known XL, it would be equivalent to the voltage of the unknown ZL (using thevenin) but then I'm missing the current, in which if I used the general form, I don't have the resistance for ZL. which leaves finding the Zt from the power and then finding the ZL by back tracking it but the unknown resistance is parallel with the XL so I'm finding it impossible to do it algebraically. Also tried to use the power (i'm guessing apparent power since it's mentioned in VA) to find the I conjucate, and I, and Zt for the circuit but still, no luck. Attached is the question I have in mind. I still have 10~ days left for the final but I rather know how to solve it as soon as possible and get it out of the way. Any help would be appreciated!