Finding the Fourth Proportional to 7,018.50, 9,685.50 and 3,874.66

Step by Step Solution

1. Step 1: Write the proportion equation
   7,018.50 : 9,685.50 = 3,874.66 : x
2. Step 2: Convert to fraction form
   7,018.50/9,685.50 = 3,874.66/x
3. Step 3: Cross multiply
   7,018.50x = 9,685.50 × 3,874.66
4. Step 4: Simplify right side
   7,018.50x = 37,528,019.43
5. Step 5: Solve for x
   x = 37,528,019.43/7,018.50
6. Step 6: Final answer
   x = 5,347.01