Finding the Fourth Proportional to 7,018.39, 9,685.12 and 3,874.51

Step by Step Solution

1. Step 1: Write the proportion equation
   7,018.39 : 9,685.12 = 3,874.51 : x
2. Step 2: Convert to fraction form
   7,018.39/9,685.12 = 3,874.51/x
3. Step 3: Cross multiply
   7,018.39x = 9,685.12 × 3,874.51
4. Step 4: Simplify right side
   7,018.39x = 37,525,026.49
5. Step 5: Solve for x
   x = 37,525,026.49/7,018.39
6. Step 6: Final answer
   x = 5,346.68