Finding the Fourth Proportional to 5,707.43, 8,555.31 and 3,858.72

Step by Step Solution

1. Step 1: Write the proportion equation
   5,707.43 : 8,555.31 = 3,858.72 : x
2. Step 2: Convert to fraction form
   5,707.43/8,555.31 = 3,858.72/x
3. Step 3: Cross multiply
   5,707.43x = 8,555.31 × 3,858.72
4. Step 4: Simplify right side
   5,707.43x = 33,012,545.80
5. Step 5: Solve for x
   x = 33,012,545.80/5,707.43
6. Step 6: Final answer
   x = 5,784.14