Finding the Fourth Proportional to 16,431.72, 24,651.90 and 7,662.12

Step by Step Solution

1. Step 1: Write the proportion equation
   16,431.72 : 24,651.90 = 7,662.12 : x
2. Step 2: Convert to fraction form
   16,431.72/24,651.90 = 7,662.12/x
3. Step 3: Cross multiply
   16,431.72x = 24,651.90 × 7,662.12
4. Step 4: Simplify right side
   16,431.72x = 188,885,816.03
5. Step 5: Solve for x
   x = 188,885,816.03/16,431.72
6. Step 6: Final answer
   x = 11,495.19