Finding the Fourth Proportional to 3,930.15, 5,889.30 and 3,559.71

Step by Step Solution

1. Step 1: Write the proportion equation
   3,930.15 : 5,889.30 = 3,559.71 : x
2. Step 2: Convert to fraction form
   3,930.15/5,889.30 = 3,559.71/x
3. Step 3: Cross multiply
   3,930.15x = 5,889.30 × 3,559.71
4. Step 4: Simplify right side
   3,930.15x = 20,964,200.10
5. Step 5: Solve for x
   x = 20,964,200.10/3,930.15
6. Step 6: Final answer
   x = 5,334.20