Finding the Fourth Proportional to 22,255.50, 30,714.51 and 12,321.42

Step by Step Solution

1. Step 1: Write the proportion equation
   22,255.50 : 30,714.51 = 12,321.42 : x
2. Step 2: Convert to fraction form
   22,255.50/30,714.51 = 12,321.42/x
3. Step 3: Cross multiply
   22,255.50x = 30,714.51 × 12,321.42
4. Step 4: Simplify right side
   22,255.50x = 378,446,377.80
5. Step 5: Solve for x
   x = 378,446,377.80/22,255.50
6. Step 6: Final answer
   x = 17,004.62