Finding the Fourth Proportional to 16,854.91, 25,297.88 and 8,540.72

Step by Step Solution

1. Step 1: Write the proportion equation
   16,854.91 : 25,297.88 = 8,540.72 : x
2. Step 2: Convert to fraction form
   16,854.91/25,297.88 = 8,540.72/x
3. Step 3: Cross multiply
   16,854.91x = 25,297.88 × 8,540.72
4. Step 4: Simplify right side
   16,854.91x = 216,062,109.67
5. Step 5: Solve for x
   x = 216,062,109.67/16,854.91
6. Step 6: Final answer
   x = 12,818.94