Finding the Fourth Proportional to 6,499.92, 9,739.72 and 3,862.15

Step by Step Solution

1. Step 1: Write the proportion equation
   6,499.92 : 9,739.72 = 3,862.15 : x
2. Step 2: Convert to fraction form
   6,499.92/9,739.72 = 3,862.15/x
3. Step 3: Cross multiply
   6,499.92x = 9,739.72 × 3,862.15
4. Step 4: Simplify right side
   6,499.92x = 37,616,259.60
5. Step 5: Solve for x
   x = 37,616,259.60/6,499.92
6. Step 6: Final answer
   x = 5,787.19