Finding the Fourth Proportional to 3,886.19, 5,366.10 and 3,168.49

Step by Step Solution

1. Step 1: Write the proportion equation
   3,886.19 : 5,366.10 = 3,168.49 : x
2. Step 2: Convert to fraction form
   3,886.19/5,366.10 = 3,168.49/x
3. Step 3: Cross multiply
   3,886.19x = 5,366.10 × 3,168.49
4. Step 4: Simplify right side
   3,886.19x = 17,002,391.52
5. Step 5: Solve for x
   x = 17,002,391.52/3,886.19
6. Step 6: Final answer
   x = 4,375.09