Finding the Fourth Proportional to 5,727.72, 7,903.98 and 3,209.52

Step by Step Solution

1. Step 1: Write the proportion equation
   5,727.72 : 7,903.98 = 3,209.52 : x
2. Step 2: Convert to fraction form
   5,727.72/7,903.98 = 3,209.52/x
3. Step 3: Cross multiply
   5,727.72x = 7,903.98 × 3,209.52
4. Step 4: Simplify right side
   5,727.72x = 25,367,981.89
5. Step 5: Solve for x
   x = 25,367,981.89/5,727.72
6. Step 6: Final answer
   x = 4,428.98