Finding the Fourth Proportional to 9,383.47, 12,945.16 and 5,403.73

Step by Step Solution

1. Step 1: Write the proportion equation
   9,383.47 : 12,945.16 = 5,403.73 : x
2. Step 2: Convert to fraction form
   9,383.47/12,945.16 = 5,403.73/x
3. Step 3: Cross multiply
   9,383.47x = 12,945.16 × 5,403.73
4. Step 4: Simplify right side
   9,383.47x = 69,952,149.45
5. Step 5: Solve for x
   x = 69,952,149.45/9,383.47
6. Step 6: Final answer
   x = 7,454.83