Finding the Fourth Proportional to 8,434.72, 11,641.31 and 8,061.04

Step by Step Solution

1. Step 1: Write the proportion equation
   8,434.72 : 11,641.31 = 8,061.04 : x
2. Step 2: Convert to fraction form
   8,434.72/11,641.31 = 8,061.04/x
3. Step 3: Cross multiply
   8,434.72x = 11,641.31 × 8,061.04
4. Step 4: Simplify right side
   8,434.72x = 93,841,065.56
5. Step 5: Solve for x
   x = 93,841,065.56/8,434.72
6. Step 6: Final answer
   x = 11,125.57