Finding the Fourth Proportional to 12,229.30, 18,332.88 and 5,653.72

Step by Step Solution

1. Step 1: Write the proportion equation
   12,229.30 : 18,332.88 = 5,653.72 : x
2. Step 2: Convert to fraction form
   12,229.30/18,332.88 = 5,653.72/x
3. Step 3: Cross multiply
   12,229.30x = 18,332.88 × 5,653.72
4. Step 4: Simplify right side
   12,229.30x = 103,648,970.31
5. Step 5: Solve for x
   x = 103,648,970.31/12,229.30
6. Step 6: Final answer
   x = 8,475.46