Finding the Fourth Proportional to 10,854.08, 16,282.31 and 3,456.80

Step by Step Solution

1. Step 1: Write the proportion equation
   10,854.08 : 16,282.31 = 3,456.80 : x
2. Step 2: Convert to fraction form
   10,854.08/16,282.31 = 3,456.80/x
3. Step 3: Cross multiply
   10,854.08x = 16,282.31 × 3,456.80
4. Step 4: Simplify right side
   10,854.08x = 56,284,738.56
5. Step 5: Solve for x
   x = 56,284,738.56/10,854.08
6. Step 6: Final answer
   x = 5,185.58