Finding the Fourth Proportional to 5,404.61, 8,109.96 and 2,939.61

Step by Step Solution

1. Step 1: Write the proportion equation
   5,404.61 : 8,109.96 = 2,939.61 : x
2. Step 2: Convert to fraction form
   5,404.61/8,109.96 = 2,939.61/x
3. Step 3: Cross multiply
   5,404.61x = 8,109.96 × 2,939.61
4. Step 4: Simplify right side
   5,404.61x = 23,840,078.08
5. Step 5: Solve for x
   x = 23,840,078.08/5,404.61
6. Step 6: Final answer
   x = 4,411.06