Finding the Fourth Proportional to 7,018.03, 9,684.81 and 3,874.21

Step by Step Solution

1. Step 1: Write the proportion equation
   7,018.03 : 9,684.81 = 3,874.21 : x
2. Step 2: Convert to fraction form
   7,018.03/9,684.81 = 3,874.21/x
3. Step 3: Cross multiply
   7,018.03x = 9,684.81 × 3,874.21
4. Step 4: Simplify right side
   7,018.03x = 37,520,939.33
5. Step 5: Solve for x
   x = 37,520,939.33/7,018.03
6. Step 6: Final answer
   x = 5,346.37