Finding the Fourth Proportional to 9,101.92, 12,557.50 and 5,518.04

Step by Step Solution

1. Step 1: Write the proportion equation
   9,101.92 : 12,557.50 = 5,518.04 : x
2. Step 2: Convert to fraction form
   9,101.92/12,557.50 = 5,518.04/x
3. Step 3: Cross multiply
   9,101.92x = 12,557.50 × 5,518.04
4. Step 4: Simplify right side
   9,101.92x = 69,292,787.30
5. Step 5: Solve for x
   x = 69,292,787.30/9,101.92
6. Step 6: Final answer
   x = 7,612.99