Finding the Fourth Proportional to 8,713.10, 12,025.98 and 5,358.80

Step by Step Solution

1. Step 1: Write the proportion equation
   8,713.10 : 12,025.98 = 5,358.80 : x
2. Step 2: Convert to fraction form
   8,713.10/12,025.98 = 5,358.80/x
3. Step 3: Cross multiply
   8,713.10x = 12,025.98 × 5,358.80
4. Step 4: Simplify right side
   8,713.10x = 64,444,821.62
5. Step 5: Solve for x
   x = 64,444,821.62/8,713.10
6. Step 6: Final answer
   x = 7,396.31