Finding the Fourth Proportional to 8,100.76, 12,142.50 and 5,785.24

Step by Step Solution

1. Step 1: Write the proportion equation
   8,100.76 : 12,142.50 = 5,785.24 : x
2. Step 2: Convert to fraction form
   8,100.76/12,142.50 = 5,785.24/x
3. Step 3: Cross multiply
   8,100.76x = 12,142.50 × 5,785.24
4. Step 4: Simplify right side
   8,100.76x = 70,247,276.70
5. Step 5: Solve for x
   x = 70,247,276.70/8,100.76
6. Step 6: Final answer
   x = 8,671.69