Finding the Fourth Proportional to 14,651.10, 20,218.57 and 7,936.72

Step by Step Solution

1. Step 1: Write the proportion equation
   14,651.10 : 20,218.57 = 7,936.72 : x
2. Step 2: Convert to fraction form
   14,651.10/20,218.57 = 7,936.72/x
3. Step 3: Cross multiply
   14,651.10x = 20,218.57 × 7,936.72
4. Step 4: Simplify right side
   14,651.10x = 160,469,058.50
5. Step 5: Solve for x
   x = 160,469,058.50/14,651.10
6. Step 6: Final answer
   x = 10,952.70