Finding the Fourth Proportional to 9,108.24, 12,568.58 and 5,128.62

Step by Step Solution

1. Step 1: Write the proportion equation
   9,108.24 : 12,568.58 = 5,128.62 : x
2. Step 2: Convert to fraction form
   9,108.24/12,568.58 = 5,128.62/x
3. Step 3: Cross multiply
   9,108.24x = 12,568.58 × 5,128.62
4. Step 4: Simplify right side
   9,108.24x = 64,459,470.76
5. Step 5: Solve for x
   x = 64,459,470.76/9,108.24
6. Step 6: Final answer
   x = 7,077.05