Finding the Fourth Proportional to 22,815.84, 31,503.20 and 17,158.72

Step by Step Solution

1. Step 1: Write the proportion equation
   22,815.84 : 31,503.20 = 17,158.72 : x
2. Step 2: Convert to fraction form
   22,815.84/31,503.20 = 17,158.72/x
3. Step 3: Cross multiply
   22,815.84x = 31,503.20 × 17,158.72
4. Step 4: Simplify right side
   22,815.84x = 540,554,587.90
5. Step 5: Solve for x
   x = 540,554,587.90/22,815.84
6. Step 6: Final answer
   x = 23,692.07