Finding the Fourth Proportional to 14,826.72, 20,452.72 and 9,439.12

Step by Step Solution

1. Step 1: Write the proportion equation
   14,826.72 : 20,452.72 = 9,439.12 : x
2. Step 2: Convert to fraction form
   14,826.72/20,452.72 = 9,439.12/x
3. Step 3: Cross multiply
   14,826.72x = 20,452.72 × 9,439.12
4. Step 4: Simplify right side
   14,826.72x = 193,055,678.41
5. Step 5: Solve for x
   x = 193,055,678.41/14,826.72
6. Step 6: Final answer
   x = 13,020.79