Finding the Fourth Proportional to 9,007.52, 12,428.89 and 5,028.63

Step by Step Solution

1. Step 1: Write the proportion equation
   9,007.52 : 12,428.89 = 5,028.63 : x
2. Step 2: Convert to fraction form
   9,007.52/12,428.89 = 5,028.63/x
3. Step 3: Cross multiply
   9,007.52x = 12,428.89 × 5,028.63
4. Step 4: Simplify right side
   9,007.52x = 62,500,289.12
5. Step 5: Solve for x
   x = 62,500,289.12/9,007.52
6. Step 6: Final answer
   x = 6,938.68