Finding the Fourth Proportional to 7,018.47, 9,685.33 and 3,831.64

Step by Step Solution

1. Step 1: Write the proportion equation
   7,018.47 : 9,685.33 = 3,831.64 : x
2. Step 2: Convert to fraction form
   7,018.47/9,685.33 = 3,831.64/x
3. Step 3: Cross multiply
   7,018.47x = 9,685.33 × 3,831.64
4. Step 4: Simplify right side
   7,018.47x = 37,110,719.73
5. Step 5: Solve for x
   x = 37,110,719.73/7,018.47
6. Step 6: Final answer
   x = 5,287.58