Finding the Fourth Proportional to 6,243.90, 8,616.69 and 3,726.15

Step by Step Solution

1. Step 1: Write the proportion equation
   6,243.90 : 8,616.69 = 3,726.15 : x
2. Step 2: Convert to fraction form
   6,243.90/8,616.69 = 3,726.15/x
3. Step 3: Cross multiply
   6,243.90x = 8,616.69 × 3,726.15
4. Step 4: Simplify right side
   6,243.90x = 32,107,079.44
5. Step 5: Solve for x
   x = 32,107,079.44/6,243.90
6. Step 6: Final answer
   x = 5,142.15