Finding the Fourth Proportional to 22,689, 31,310.82 and 13,265.48

Step by Step Solution

1. Step 1: Write the proportion equation
   22,689 : 31,310.82 = 13,265.48 : x
2. Step 2: Convert to fraction form
   22,689/31,310.82 = 13,265.48/x
3. Step 3: Cross multiply
   22,689x = 31,310.82 × 13,265.48
4. Step 4: Simplify right side
   22,689x = 415,353,056.49
5. Step 5: Solve for x
   x = 415,353,056.49/22,689
6. Step 6: Final answer
   x = 18,306.36