Finding the Fourth Proportional to 16,138.72, 24,216.72 and 12,250.72

Step by Step Solution

1. Step 1: Write the proportion equation
   16,138.72 : 24,216.72 = 12,250.72 : x
2. Step 2: Convert to fraction form
   16,138.72/24,216.72 = 12,250.72/x
3. Step 3: Cross multiply
   16,138.72x = 24,216.72 × 12,250.72
4. Step 4: Simplify right side
   16,138.72x = 296,672,256.04
5. Step 5: Solve for x
   x = 296,672,256.04/16,138.72
6. Step 6: Final answer
   x = 18,382.64