Finding the Fourth Proportional to 7,018.27, 9,685.14 and 3,831.55

Step by Step Solution

1. Step 1: Write the proportion equation
   7,018.27 : 9,685.14 = 3,831.55 : x
2. Step 2: Convert to fraction form
   7,018.27/9,685.14 = 3,831.55/x
3. Step 3: Cross multiply
   7,018.27x = 9,685.14 × 3,831.55
4. Step 4: Simplify right side
   7,018.27x = 37,109,098.17
5. Step 5: Solve for x
   x = 37,109,098.17/7,018.27
6. Step 6: Final answer
   x = 5,287.50