Finding the Fourth Proportional to 7,018.35, 9,685.38 and 3,831.67

Step by Step Solution

1. Step 1: Write the proportion equation
   7,018.35 : 9,685.38 = 3,831.67 : x
2. Step 2: Convert to fraction form
   7,018.35/9,685.38 = 3,831.67/x
3. Step 3: Cross multiply
   7,018.35x = 9,685.38 × 3,831.67
4. Step 4: Simplify right side
   7,018.35x = 37,111,179.98
5. Step 5: Solve for x
   x = 37,111,179.98/7,018.35
6. Step 6: Final answer
   x = 5,287.74