Finding the Fourth Proportional to 5,291.83, 7,922.16 and 3,911.32

Step by Step Solution

1. Step 1: Write the proportion equation
   5,291.83 : 7,922.16 = 3,911.32 : x
2. Step 2: Convert to fraction form
   5,291.83/7,922.16 = 3,911.32/x
3. Step 3: Cross multiply
   5,291.83x = 7,922.16 × 3,911.32
4. Step 4: Simplify right side
   5,291.83x = 30,986,102.85
5. Step 5: Solve for x
   x = 30,986,102.85/5,291.83
6. Step 6: Final answer
   x = 5,855.46