Finding the Fourth Proportional to 5,559.06, 8,339.96 and 3,918.81

Step by Step Solution

1. Step 1: Write the proportion equation
   5,559.06 : 8,339.96 = 3,918.81 : x
2. Step 2: Convert to fraction form
   5,559.06/8,339.96 = 3,918.81/x
3. Step 3: Cross multiply
   5,559.06x = 8,339.96 × 3,918.81
4. Step 4: Simplify right side
   5,559.06x = 32,682,759.72
5. Step 5: Solve for x
   x = 32,682,759.72/5,559.06
6. Step 6: Final answer
   x = 5,879.18