Finding the Fourth Proportional to 22,022.16, 30,391.50 and 12,590.72

Step by Step Solution

1. Step 1: Write the proportion equation
   22,022.16 : 30,391.50 = 12,590.72 : x
2. Step 2: Convert to fraction form
   22,022.16/30,391.50 = 12,590.72/x
3. Step 3: Cross multiply
   22,022.16x = 30,391.50 × 12,590.72
4. Step 4: Simplify right side
   22,022.16x = 382,650,714.92
5. Step 5: Solve for x
   x = 382,650,714.92/22,022.16
6. Step 6: Final answer
   x = 17,375.71