Finding the Fourth Proportional to 7,049.56, 9,728.46 and 3,906.04

Step by Step Solution

1. Step 1: Write the proportion equation
   7,049.56 : 9,728.46 = 3,906.04 : x
2. Step 2: Convert to fraction form
   7,049.56/9,728.46 = 3,906.04/x
3. Step 3: Cross multiply
   7,049.56x = 9,728.46 × 3,906.04
4. Step 4: Simplify right side
   7,049.56x = 37,999,753.90
5. Step 5: Solve for x
   x = 37,999,753.90/7,049.56
6. Step 6: Final answer
   x = 5,390.37