Finding the Fourth Proportional to 9,957.42, 13,725.90 and 7,435.71

Step by Step Solution

1. Step 1: Write the proportion equation
   9,957.42 : 13,725.90 = 7,435.71 : x
2. Step 2: Convert to fraction form
   9,957.42/13,725.90 = 7,435.71/x
3. Step 3: Cross multiply
   9,957.42x = 13,725.90 × 7,435.71
4. Step 4: Simplify right side
   9,957.42x = 102,061,811.89
5. Step 5: Solve for x
   x = 102,061,811.89/9,957.42
6. Step 6: Final answer
   x = 10,249.82