Finding the Fourth Proportional to 7,018.28, 9,684.82 and 3,874.28

Step by Step Solution

1. Step 1: Write the proportion equation
   7,018.28 : 9,684.82 = 3,874.28 : x
2. Step 2: Convert to fraction form
   7,018.28/9,684.82 = 3,874.28/x
3. Step 3: Cross multiply
   7,018.28x = 9,684.82 × 3,874.28
4. Step 4: Simplify right side
   7,018.28x = 37,521,704.43
5. Step 5: Solve for x
   x = 37,521,704.43/7,018.28
6. Step 6: Final answer
   x = 5,346.28