Finding the Fourth Proportional to 10,854.28, 14,978.40 and 6,074.83

Step by Step Solution

1. Step 1: Write the proportion equation
   10,854.28 : 14,978.40 = 6,074.83 : x
2. Step 2: Convert to fraction form
   10,854.28/14,978.40 = 6,074.83/x
3. Step 3: Cross multiply
   10,854.28x = 14,978.40 × 6,074.83
4. Step 4: Simplify right side
   10,854.28x = 90,991,229.61
5. Step 5: Solve for x
   x = 90,991,229.61/10,854.28
6. Step 6: Final answer
   x = 8,382.98