Finding the Fourth Proportional to 9,025.72, 12,455.24 and 5,047.20

Step by Step Solution

1. Step 1: Write the proportion equation
   9,025.72 : 12,455.24 = 5,047.20 : x
2. Step 2: Convert to fraction form
   9,025.72/12,455.24 = 5,047.20/x
3. Step 3: Cross multiply
   9,025.72x = 12,455.24 × 5,047.20
4. Step 4: Simplify right side
   9,025.72x = 62,864,062.09
5. Step 5: Solve for x
   x = 62,864,062.09/9,025.72
6. Step 6: Final answer
   x = 6,964.99