Finding the Fourth Proportional to 3,871.76, 5,336.15 and 3,159.02

Step by Step Solution

1. Step 1: Write the proportion equation
   3,871.76 : 5,336.15 = 3,159.02 : x
2. Step 2: Convert to fraction form
   3,871.76/5,336.15 = 3,159.02/x
3. Step 3: Cross multiply
   3,871.76x = 5,336.15 × 3,159.02
4. Step 4: Simplify right side
   3,871.76x = 16,857,002.12
5. Step 5: Solve for x
   x = 16,857,002.12/3,871.76
6. Step 6: Final answer
   x = 4,353.84