Finding the Fourth Proportional to 8,854.52, 12,221.31 and 5,077.61

Step by Step Solution

1. Step 1: Write the proportion equation
   8,854.52 : 12,221.31 = 5,077.61 : x
2. Step 2: Convert to fraction form
   8,854.52/12,221.31 = 5,077.61/x
3. Step 3: Cross multiply
   8,854.52x = 12,221.31 × 5,077.61
4. Step 4: Simplify right side
   8,854.52x = 62,055,045.87
5. Step 5: Solve for x
   x = 62,055,045.87/8,854.52
6. Step 6: Final answer
   x = 7,008.29