Finding the Fourth Proportional to 9,813.31, 13,542.49 and 5,337.18

Step by Step Solution

1. Step 1: Write the proportion equation
   9,813.31 : 13,542.49 = 5,337.18 : x
2. Step 2: Convert to fraction form
   9,813.31/13,542.49 = 5,337.18/x
3. Step 3: Cross multiply
   9,813.31x = 13,542.49 × 5,337.18
4. Step 4: Simplify right side
   9,813.31x = 72,278,706.78
5. Step 5: Solve for x
   x = 72,278,706.78/9,813.31
6. Step 6: Final answer
   x = 7,365.37