Finding the Fourth Proportional to 16,431.16, 24,663.18 and 7,672.24

Step by Step Solution

1. Step 1: Write the proportion equation
   16,431.16 : 24,663.18 = 7,672.24 : x
2. Step 2: Convert to fraction form
   16,431.16/24,663.18 = 7,672.24/x
3. Step 3: Cross multiply
   16,431.16x = 24,663.18 × 7,672.24
4. Step 4: Simplify right side
   16,431.16x = 189,221,836.12
5. Step 5: Solve for x
   x = 189,221,836.12/16,431.16
6. Step 6: Final answer
   x = 11,516.04