Finding the Fourth Proportional to 3,976.29, 5,485.48 and 2,559.47

Step by Step Solution

1. Step 1: Write the proportion equation
   3,976.29 : 5,485.48 = 2,559.47 : x
2. Step 2: Convert to fraction form
   3,976.29/5,485.48 = 2,559.47/x
3. Step 3: Cross multiply
   3,976.29x = 5,485.48 × 2,559.47
4. Step 4: Simplify right side
   3,976.29x = 14,039,921.50
5. Step 5: Solve for x
   x = 14,039,921.50/3,976.29
6. Step 6: Final answer
   x = 3,530.91