Finding the Fourth Proportional to 9,311.98, 12,849.14 and 5,535.22

Step by Step Solution

1. Step 1: Write the proportion equation
   9,311.98 : 12,849.14 = 5,535.22 : x
2. Step 2: Convert to fraction form
   9,311.98/12,849.14 = 5,535.22/x
3. Step 3: Cross multiply
   9,311.98x = 12,849.14 × 5,535.22
4. Step 4: Simplify right side
   9,311.98x = 71,122,816.71
5. Step 5: Solve for x
   x = 71,122,816.71/9,311.98
6. Step 6: Final answer
   x = 7,637.78