Finding the Fourth Proportional to 16,311.96, 24,469.56 and 5,215.86

Step by Step Solution

1. Step 1: Write the proportion equation
   16,311.96 : 24,469.56 = 5,215.86 : x
2. Step 2: Convert to fraction form
   16,311.96/24,469.56 = 5,215.86/x
3. Step 3: Cross multiply
   16,311.96x = 24,469.56 × 5,215.86
4. Step 4: Simplify right side
   16,311.96x = 127,629,799.22
5. Step 5: Solve for x
   x = 127,629,799.22/16,311.96
6. Step 6: Final answer
   x = 7,824.31