Finding the Fourth Proportional to 9,725.98, 14,585.90 and 3,150.80

Step by Step Solution

1. Step 1: Write the proportion equation
   9,725.98 : 14,585.90 = 3,150.80 : x
2. Step 2: Convert to fraction form
   9,725.98/14,585.90 = 3,150.80/x
3. Step 3: Cross multiply
   9,725.98x = 14,585.90 × 3,150.80
4. Step 4: Simplify right side
   9,725.98x = 45,957,253.72
5. Step 5: Solve for x
   x = 45,957,253.72/9,725.98
6. Step 6: Final answer
   x = 4,725.21