Finding the Fourth Proportional to 5,850.28, 8,700.18 and 5,665.71

Step by Step Solution

1. Step 1: Write the proportion equation
   5,850.28 : 8,700.18 = 5,665.71 : x
2. Step 2: Convert to fraction form
   5,850.28/8,700.18 = 5,665.71/x
3. Step 3: Cross multiply
   5,850.28x = 8,700.18 × 5,665.71
4. Step 4: Simplify right side
   5,850.28x = 49,292,696.83
5. Step 5: Solve for x
   x = 49,292,696.83/5,850.28
6. Step 6: Final answer
   x = 8,425.70