Finding the Fourth Proportional to 16,231.62, 24,386.28 and 10,399.62

Step by Step Solution

1. Step 1: Write the proportion equation
   16,231.62 : 24,386.28 = 10,399.62 : x
2. Step 2: Convert to fraction form
   16,231.62/24,386.28 = 10,399.62/x
3. Step 3: Cross multiply
   16,231.62x = 24,386.28 × 10,399.62
4. Step 4: Simplify right side
   16,231.62x = 253,608,045.21
5. Step 5: Solve for x
   x = 253,608,045.21/16,231.62
6. Step 6: Final answer
   x = 15,624.32