Finding the Fourth Proportional to 9,813.39, 13,542.53 and 5,337.12

Step by Step Solution

1. Step 1: Write the proportion equation
   9,813.39 : 13,542.53 = 5,337.12 : x
2. Step 2: Convert to fraction form
   9,813.39/13,542.53 = 5,337.12/x
3. Step 3: Cross multiply
   9,813.39x = 13,542.53 × 5,337.12
4. Step 4: Simplify right side
   9,813.39x = 72,278,081.03
5. Step 5: Solve for x
   x = 72,278,081.03/9,813.39
6. Step 6: Final answer
   x = 7,365.25