Finding the Fourth Proportional to 16,231.56, 24,315.78 and 10,668.15

Step by Step Solution

1. Step 1: Write the proportion equation
   16,231.56 : 24,315.78 = 10,668.15 : x
2. Step 2: Convert to fraction form
   16,231.56/24,315.78 = 10,668.15/x
3. Step 3: Cross multiply
   16,231.56x = 24,315.78 × 10,668.15
4. Step 4: Simplify right side
   16,231.56x = 259,404,388.41
5. Step 5: Solve for x
   x = 259,404,388.41/16,231.56
6. Step 6: Final answer
   x = 15,981.48