Finding the Fourth Proportional to 16,851.10, 25,226.72 and 12,488.14

Step by Step Solution

1. Step 1: Write the proportion equation
   16,851.10 : 25,226.72 = 12,488.14 : x
2. Step 2: Convert to fraction form
   16,851.10/25,226.72 = 12,488.14/x
3. Step 3: Cross multiply
   16,851.10x = 25,226.72 × 12,488.14
4. Step 4: Simplify right side
   16,851.10x = 315,034,811.10
5. Step 5: Solve for x
   x = 315,034,811.10/16,851.10
6. Step 6: Final answer
   x = 18,695.21