Finding the Fourth Proportional to 8,869.50, 12,240.06 and 5,731.16

Step by Step Solution

1. Step 1: Write the proportion equation
   8,869.50 : 12,240.06 = 5,731.16 : x
2. Step 2: Convert to fraction form
   8,869.50/12,240.06 = 5,731.16/x
3. Step 3: Cross multiply
   8,869.50x = 12,240.06 × 5,731.16
4. Step 4: Simplify right side
   8,869.50x = 70,149,691.82
5. Step 5: Solve for x
   x = 70,149,691.82/8,869.50
6. Step 6: Final answer
   x = 7,909.09