Finding the Fourth Proportional to 20,725.42, 31,063.78 and 9,608.71

Step by Step Solution

1. Step 1: Write the proportion equation
   20,725.42 : 31,063.78 = 9,608.71 : x
2. Step 2: Convert to fraction form
   20,725.42/31,063.78 = 9,608.71/x
3. Step 3: Cross multiply
   20,725.42x = 31,063.78 × 9,608.71
4. Step 4: Simplify right side
   20,725.42x = 298,482,727.82
5. Step 5: Solve for x
   x = 298,482,727.82/20,725.42
6. Step 6: Final answer
   x = 14,401.77