Finding the Fourth Proportional to 9,007.11, 12,429.54 and 5,028.21

Step by Step Solution

1. Step 1: Write the proportion equation
   9,007.11 : 12,429.54 = 5,028.21 : x
2. Step 2: Convert to fraction form
   9,007.11/12,429.54 = 5,028.21/x
3. Step 3: Cross multiply
   9,007.11x = 12,429.54 × 5,028.21
4. Step 4: Simplify right side
   9,007.11x = 62,498,337.32
5. Step 5: Solve for x
   x = 62,498,337.32/9,007.11
6. Step 6: Final answer
   x = 6,938.78