Finding the Fourth Proportional to 10,081.56, 15,103.14 and 5,685.72

Step by Step Solution

1. Step 1: Write the proportion equation
   10,081.56 : 15,103.14 = 5,685.72 : x
2. Step 2: Convert to fraction form
   10,081.56/15,103.14 = 5,685.72/x
3. Step 3: Cross multiply
   10,081.56x = 15,103.14 × 5,685.72
4. Step 4: Simplify right side
   10,081.56x = 85,872,225.16
5. Step 5: Solve for x
   x = 85,872,225.16/10,081.56
6. Step 6: Final answer
   x = 8,517.75