Finding the Fourth Proportional to 21,196.62, 31,793.82 and 8,713.52

Step by Step Solution

1. Step 1: Write the proportion equation
   21,196.62 : 31,793.82 = 8,713.52 : x
2. Step 2: Convert to fraction form
   21,196.62/31,793.82 = 8,713.52/x
3. Step 3: Cross multiply
   21,196.62x = 31,793.82 × 8,713.52
4. Step 4: Simplify right side
   21,196.62x = 277,036,086.45
5. Step 5: Solve for x
   x = 277,036,086.45/21,196.62
6. Step 6: Final answer
   x = 13,069.82