To solve for X, we first need to isolate X on one side of the equation.

Given: X + (x/100 * 21.8) = 130000

Let's first simplify the equation by multiplying x and 21.8:

X + (21.8x/100) = 130000

Next, we can multiply both sides of the equation by 100 to get rid of the fraction:

100X + 21.8x = 13000000

Now, combine the X and x terms:

100X + 21.8x = 13000000

Now, we can isolate X by moving the 21.8x to the other side of the equation:

100X = 13000000 - 21.8x

Finally, divide by 100 to solve for X:

X = (13000000 - 21.8x) / 100

To find the exact value of X, we would need a specific value for x in order to plug it in and calculate X.