Finding the Fourth Proportional to 10,687.31, 14,743.85 and 7,151.66

Step by Step Solution

1. Step 1: Write the proportion equation
   10,687.31 : 14,743.85 = 7,151.66 : x
2. Step 2: Convert to fraction form
   10,687.31/14,743.85 = 7,151.66/x
3. Step 3: Cross multiply
   10,687.31x = 14,743.85 × 7,151.66
4. Step 4: Simplify right side
   10,687.31x = 105,442,892.81
5. Step 5: Solve for x
   x = 105,442,892.81/10,687.31
6. Step 6: Final answer
   x = 9,866.18