Finding the Fourth Proportional to 22,910.27, 31,540.07 and 20,548.31

Step by Step Solution

1. Step 1: Write the proportion equation
   22,910.27 : 31,540.07 = 20,548.31 : x
2. Step 2: Convert to fraction form
   22,910.27/31,540.07 = 20,548.31/x
3. Step 3: Cross multiply
   22,910.27x = 31,540.07 × 20,548.31
4. Step 4: Simplify right side
   22,910.27x = 648,095,033.04
5. Step 5: Solve for x
   x = 648,095,033.04/22,910.27
6. Step 6: Final answer
   x = 28,288.41