Finding the Fourth Proportional to 9,006.52, 12,428.88 and 5,028.12

Step by Step Solution

1. Step 1: Write the proportion equation
   9,006.52 : 12,428.88 = 5,028.12 : x
2. Step 2: Convert to fraction form
   9,006.52/12,428.88 = 5,028.12/x
3. Step 3: Cross multiply
   9,006.52x = 12,428.88 × 5,028.12
4. Step 4: Simplify right side
   9,006.52x = 62,493,900.11
5. Step 5: Solve for x
   x = 62,493,900.11/9,006.52
6. Step 6: Final answer
   x = 6,938.74