Finding the Fourth Proportional to 9,502.80, 13,113.96 and 5,311

Step by Step Solution

1. Step 1: Write the proportion equation
   9,502.80 : 13,113.96 = 5,311 : x
2. Step 2: Convert to fraction form
   9,502.80/13,113.96 = 5,311/x
3. Step 3: Cross multiply
   9,502.80x = 13,113.96 × 5,311
4. Step 4: Simplify right side
   9,502.80x = 69,648,241.56
5. Step 5: Solve for x
   x = 69,648,241.56/9,502.80
6. Step 6: Final answer
   x = 7,329.23