Finding the Fourth Proportional to 5,728.72, 8,597.40 and 3,780.24

Step by Step Solution

1. Step 1: Write the proportion equation
   5,728.72 : 8,597.40 = 3,780.24 : x
2. Step 2: Convert to fraction form
   5,728.72/8,597.40 = 3,780.24/x
3. Step 3: Cross multiply
   5,728.72x = 8,597.40 × 3,780.24
4. Step 4: Simplify right side
   5,728.72x = 32,500,235.38
5. Step 5: Solve for x
   x = 32,500,235.38/5,728.72
6. Step 6: Final answer
   x = 5,673.21