Finding the Fourth Proportional to 6,127.71, 8,456.13 and 3,402.15

Step by Step Solution

1. Step 1: Write the proportion equation
   6,127.71 : 8,456.13 = 3,402.15 : x
2. Step 2: Convert to fraction form
   6,127.71/8,456.13 = 3,402.15/x
3. Step 3: Cross multiply
   6,127.71x = 8,456.13 × 3,402.15
4. Step 4: Simplify right side
   6,127.71x = 28,769,022.68
5. Step 5: Solve for x
   x = 28,769,022.68/6,127.71
6. Step 6: Final answer
   x = 4,694.91