Finding the Fourth Proportional to 6,290.38, 8,686.56 and 4,057.48

Step by Step Solution

1. Step 1: Write the proportion equation
   6,290.38 : 8,686.56 = 4,057.48 : x
2. Step 2: Convert to fraction form
   6,290.38/8,686.56 = 4,057.48/x
3. Step 3: Cross multiply
   6,290.38x = 8,686.56 × 4,057.48
4. Step 4: Simplify right side
   6,290.38x = 35,245,543.47
5. Step 5: Solve for x
   x = 35,245,543.47/6,290.38
6. Step 6: Final answer
   x = 5,603.09