Finding the Fourth Proportional to 6,831.56, 10,240.06 and 3,903.72

Step by Step Solution

1. Step 1: Write the proportion equation
   6,831.56 : 10,240.06 = 3,903.72 : x
2. Step 2: Convert to fraction form
   6,831.56/10,240.06 = 3,903.72/x
3. Step 3: Cross multiply
   6,831.56x = 10,240.06 × 3,903.72
4. Step 4: Simplify right side
   6,831.56x = 39,974,327.02
5. Step 5: Solve for x
   x = 39,974,327.02/6,831.56
6. Step 6: Final answer
   x = 5,851.42