Finding the Fourth Proportional to 7,168.27, 9,892.07 and 3,981.40

Step by Step Solution

1. Step 1: Write the proportion equation
   7,168.27 : 9,892.07 = 3,981.40 : x
2. Step 2: Convert to fraction form
   7,168.27/9,892.07 = 3,981.40/x
3. Step 3: Cross multiply
   7,168.27x = 9,892.07 × 3,981.40
4. Step 4: Simplify right side
   7,168.27x = 39,384,287.50
5. Step 5: Solve for x
   x = 39,384,287.50/7,168.27
6. Step 6: Final answer
   x = 5,494.25