Finding the Fourth Proportional to 10,854.50, 16,281.57 and 3,458.86

Step by Step Solution

1. Step 1: Write the proportion equation
   10,854.50 : 16,281.57 = 3,458.86 : x
2. Step 2: Convert to fraction form
   10,854.50/16,281.57 = 3,458.86/x
3. Step 3: Cross multiply
   10,854.50x = 16,281.57 × 3,458.86
4. Step 4: Simplify right side
   10,854.50x = 56,315,639.15
5. Step 5: Solve for x
   x = 56,315,639.15/10,854.50
6. Step 6: Final answer
   x = 5,188.23