Finding the Fourth Proportional to 22,522.72, 31,063.60 and 21,013.68

Step by Step Solution

1. Step 1: Write the proportion equation
   22,522.72 : 31,063.60 = 21,013.68 : x
2. Step 2: Convert to fraction form
   22,522.72/31,063.60 = 21,013.68/x
3. Step 3: Cross multiply
   22,522.72x = 31,063.60 × 21,013.68
4. Step 4: Simplify right side
   22,522.72x = 652,760,550.05
5. Step 5: Solve for x
   x = 652,760,550.05/22,522.72
6. Step 6: Final answer
   x = 28,982.31