Finding the Fourth Proportional to 9,499.11, 13,112.43 and 8,502.63

Step by Step Solution

1. Step 1: Write the proportion equation
   9,499.11 : 13,112.43 = 8,502.63 : x
2. Step 2: Convert to fraction form
   9,499.11/13,112.43 = 8,502.63/x
3. Step 3: Cross multiply
   9,499.11x = 13,112.43 × 8,502.63
4. Step 4: Simplify right side
   9,499.11x = 111,490,140.69
5. Step 5: Solve for x
   x = 111,490,140.69/9,499.11
6. Step 6: Final answer
   x = 11,736.90