Finding the Fourth Proportional to 9,086.31, 12,561.47 and 9,003.15

Step by Step Solution

1. Step 1: Write the proportion equation
   9,086.31 : 12,561.47 = 9,003.15 : x
2. Step 2: Convert to fraction form
   9,086.31/12,561.47 = 9,003.15/x
3. Step 3: Cross multiply
   9,086.31x = 12,561.47 × 9,003.15
4. Step 4: Simplify right side
   9,086.31x = 113,092,798.63
5. Step 5: Solve for x
   x = 113,092,798.63/9,086.31
6. Step 6: Final answer
   x = 12,446.50