Finding the Fourth Proportional to 5,779.35, 7,974.01 and 3,540.42

Step by Step Solution

1. Step 1: Write the proportion equation
   5,779.35 : 7,974.01 = 3,540.42 : x
2. Step 2: Convert to fraction form
   5,779.35/7,974.01 = 3,540.42/x
3. Step 3: Cross multiply
   5,779.35x = 7,974.01 × 3,540.42
4. Step 4: Simplify right side
   5,779.35x = 28,231,348.91
5. Step 5: Solve for x
   x = 28,231,348.91/5,779.35
6. Step 6: Final answer
   x = 4,884.87