What is the value of x in this proportion? (image of the proportion included)

U have to cross multiply. (multiply 4x by x and 50 by 2)

X = 5
4x/50 = 2/x  take 4x and multiply it by the denominator in the other fraction it = 4x^2 do the same for the 2 &50 you get 100 now you have 4x^2=100 take the 4 divide it on both sides so 4/4=0 and 4/100=25 now you have 
x^2=25 find the square root of 25= (5) so X=5

It is 198,87032,750 + 375 = 33145 so, we take the 6% and we make it a decimal (0.6) and multiply that, then that is your answer