Finding the Fourth Proportional to 21,078.12, 31,614.66 and 5,496.96

Step by Step Solution

1. Step 1: Write the proportion equation
   21,078.12 : 31,614.66 = 5,496.96 : x
2. Step 2: Convert to fraction form
   21,078.12/31,614.66 = 5,496.96/x
3. Step 3: Cross multiply
   21,078.12x = 31,614.66 × 5,496.96
4. Step 4: Simplify right side
   21,078.12x = 173,784,521.43
5. Step 5: Solve for x
   x = 173,784,521.43/21,078.12
6. Step 6: Final answer
   x = 8,244.78