Caclulate basic value of a excise invoice

Value of X = 10000

x=10000 is the right answer but can anyone solve the equation and arrive at this 10000 please

12726.5625 = (X+0.125X)+0.125(X+0.125X)+0.05(0.125*(X+0.125X))

12726.5625=1.125X+0.140625X+0.00703125X

12726.5625=1.27265625X

X=10000

lets assume taxable x

[x*112.5%*(112.5+12.5*5%)]=12726.5625*100

112.5%*113.125%*X=12,72,656.25

X=10,000 i.e. Taxable value=10,000