Finding the Fourth Proportional to 22,771.27, 31,443.02 and 15,685.39

Step by Step Solution

1. Step 1: Write the proportion equation
   22,771.27 : 31,443.02 = 15,685.39 : x
2. Step 2: Convert to fraction form
   22,771.27/31,443.02 = 15,685.39/x
3. Step 3: Cross multiply
   22,771.27x = 31,443.02 × 15,685.39
4. Step 4: Simplify right side
   22,771.27x = 493,196,031.48
5. Step 5: Solve for x
   x = 493,196,031.48/22,771.27
6. Step 6: Final answer
   x = 21,658.70