Finding the Fourth Proportional to 8,061.72, 12,087.92 and 3,125.58

Step by Step Solution

1. Step 1: Write the proportion equation
   8,061.72 : 12,087.92 = 3,125.58 : x
2. Step 2: Convert to fraction form
   8,061.72/12,087.92 = 3,125.58/x
3. Step 3: Cross multiply
   8,061.72x = 12,087.92 × 3,125.58
4. Step 4: Simplify right side
   8,061.72x = 37,781,790.70
5. Step 5: Solve for x
   x = 37,781,790.70/8,061.72
6. Step 6: Final answer
   x = 4,686.56