Finding the Fourth Proportional to 16,987.29, 25,469.31 and 8,651.18

Step by Step Solution

1. Step 1: Write the proportion equation
   16,987.29 : 25,469.31 = 8,651.18 : x
2. Step 2: Convert to fraction form
   16,987.29/25,469.31 = 8,651.18/x
3. Step 3: Cross multiply
   16,987.29x = 25,469.31 × 8,651.18
4. Step 4: Simplify right side
   16,987.29x = 220,339,441.72
5. Step 5: Solve for x
   x = 220,339,441.72/16,987.29
6. Step 6: Final answer
   x = 12,970.84