Finding the Fourth Proportional to 3,981.72, 5,476.50 and 3,194.04

Step by Step Solution

1. Step 1: Write the proportion equation
   3,981.72 : 5,476.50 = 3,194.04 : x
2. Step 2: Convert to fraction form
   3,981.72/5,476.50 = 3,194.04/x
3. Step 3: Cross multiply
   3,981.72x = 5,476.50 × 3,194.04
4. Step 4: Simplify right side
   3,981.72x = 17,492,160.06
5. Step 5: Solve for x
   x = 17,492,160.06/3,981.72
6. Step 6: Final answer
   x = 4,393.12