Finding the Fourth Proportional to 5,121.30, 7,673.82 and 3,728.25

Step by Step Solution

1. Step 1: Write the proportion equation
   5,121.30 : 7,673.82 = 3,728.25 : x
2. Step 2: Convert to fraction form
   5,121.30/7,673.82 = 3,728.25/x
3. Step 3: Cross multiply
   5,121.30x = 7,673.82 × 3,728.25
4. Step 4: Simplify right side
   5,121.30x = 28,609,919.42
5. Step 5: Solve for x
   x = 28,609,919.42/5,121.30
6. Step 6: Final answer
   x = 5,586.46