Finding the Fourth Proportional to 5,280.50, 7,923.50 and 3,831.62

Step by Step Solution

1. Step 1: Write the proportion equation
   5,280.50 : 7,923.50 = 3,831.62 : x
2. Step 2: Convert to fraction form
   5,280.50/7,923.50 = 3,831.62/x
3. Step 3: Cross multiply
   5,280.50x = 7,923.50 × 3,831.62
4. Step 4: Simplify right side
   5,280.50x = 30,359,811.03
5. Step 5: Solve for x
   x = 30,359,811.03/5,280.50
6. Step 6: Final answer
   x = 5,749.42