Finding the Fourth Proportional to 9,057.18, 12,498.75 and 5,078.28

Step by Step Solution

1. Step 1: Write the proportion equation
   9,057.18 : 12,498.75 = 5,078.28 : x
2. Step 2: Convert to fraction form
   9,057.18/12,498.75 = 5,078.28/x
3. Step 3: Cross multiply
   9,057.18x = 12,498.75 × 5,078.28
4. Step 4: Simplify right side
   9,057.18x = 63,472,152.15
5. Step 5: Solve for x
   x = 63,472,152.15/9,057.18
6. Step 6: Final answer
   x = 7,007.94