Finding the Fourth Proportional to 10,061.31, 15,091.95 and 8,566.63

Step by Step Solution

1. Step 1: Write the proportion equation
   10,061.31 : 15,091.95 = 8,566.63 : x
2. Step 2: Convert to fraction form
   10,061.31/15,091.95 = 8,566.63/x
3. Step 3: Cross multiply
   10,061.31x = 15,091.95 × 8,566.63
4. Step 4: Simplify right side
   10,061.31x = 129,287,146.02
5. Step 5: Solve for x
   x = 129,287,146.02/10,061.31
6. Step 6: Final answer
   x = 12,849.93