Finding the Fourth Proportional to 9,383.13, 12,947.25 and 5,403.60

Step by Step Solution

1. Step 1: Write the proportion equation
   9,383.13 : 12,947.25 = 5,403.60 : x
2. Step 2: Convert to fraction form
   9,383.13/12,947.25 = 5,403.60/x
3. Step 3: Cross multiply
   9,383.13x = 12,947.25 × 5,403.60
4. Step 4: Simplify right side
   9,383.13x = 69,961,760.10
5. Step 5: Solve for x
   x = 69,961,760.10/9,383.13
6. Step 6: Final answer
   x = 7,456.12