Finding the Fourth Proportional to 5,620.38, 7,747.92 and 3,936.48

Step by Step Solution

1. Step 1: Write the proportion equation
   5,620.38 : 7,747.92 = 3,936.48 : x
2. Step 2: Convert to fraction form
   5,620.38/7,747.92 = 3,936.48/x
3. Step 3: Cross multiply
   5,620.38x = 7,747.92 × 3,936.48
4. Step 4: Simplify right side
   5,620.38x = 30,499,532.12
5. Step 5: Solve for x
   x = 30,499,532.12/5,620.38
6. Step 6: Final answer
   x = 5,426.60