Finding the Fourth Proportional to 22,285.43, 30,747.30 and 12,725

Step by Step Solution

1. Step 1: Write the proportion equation
   22,285.43 : 30,747.30 = 12,725 : x
2. Step 2: Convert to fraction form
   22,285.43/30,747.30 = 12,725/x
3. Step 3: Cross multiply
   22,285.43x = 30,747.30 × 12,725
4. Step 4: Simplify right side
   22,285.43x = 391,259,392.50
5. Step 5: Solve for x
   x = 391,259,392.50/22,285.43
6. Step 6: Final answer
   x = 17,556.74