Finding the Fourth Proportional to 9,387.29, 12,957.33 and 5,411.04

Step by Step Solution

1. Step 1: Write the proportion equation
   9,387.29 : 12,957.33 = 5,411.04 : x
2. Step 2: Convert to fraction form
   9,387.29/12,957.33 = 5,411.04/x
3. Step 3: Cross multiply
   9,387.29x = 12,957.33 × 5,411.04
4. Step 4: Simplify right side
   9,387.29x = 70,112,630.92
5. Step 5: Solve for x
   x = 70,112,630.92/9,387.29
6. Step 6: Final answer
   x = 7,468.89