Finding the Fourth Proportional to 11,313.72, 15,613.43 and 7,530.80

Step by Step Solution

1. Step 1: Write the proportion equation
   11,313.72 : 15,613.43 = 7,530.80 : x
2. Step 2: Convert to fraction form
   11,313.72/15,613.43 = 7,530.80/x
3. Step 3: Cross multiply
   11,313.72x = 15,613.43 × 7,530.80
4. Step 4: Simplify right side
   11,313.72x = 117,581,502.92
5. Step 5: Solve for x
   x = 117,581,502.92/11,313.72
6. Step 6: Final answer
   x = 10,392.82