Finding the Fourth Proportional to 6,420.27, 8,862.15 and 3,766.71

Step by Step Solution

1. Step 1: Write the proportion equation
   6,420.27 : 8,862.15 = 3,766.71 : x
2. Step 2: Convert to fraction form
   6,420.27/8,862.15 = 3,766.71/x
3. Step 3: Cross multiply
   6,420.27x = 8,862.15 × 3,766.71
4. Step 4: Simplify right side
   6,420.27x = 33,381,149.03
5. Step 5: Solve for x
   x = 33,381,149.03/6,420.27
6. Step 6: Final answer
   x = 5,199.34