Finding the Fourth Proportional to 10,355.52, 15,535.10 and 4,429.15

Step by Step Solution

1. Step 1: Write the proportion equation
   10,355.52 : 15,535.10 = 4,429.15 : x
2. Step 2: Convert to fraction form
   10,355.52/15,535.10 = 4,429.15/x
3. Step 3: Cross multiply
   10,355.52x = 15,535.10 × 4,429.15
4. Step 4: Simplify right side
   10,355.52x = 68,807,288.17
5. Step 5: Solve for x
   x = 68,807,288.17/10,355.52
6. Step 6: Final answer
   x = 6,644.50