Finding the Fourth Proportional to 9,383.20, 12,946.89 and 5,403.25

Step by Step Solution

1. Step 1: Write the proportion equation
   9,383.20 : 12,946.89 = 5,403.25 : x
2. Step 2: Convert to fraction form
   9,383.20/12,946.89 = 5,403.25/x
3. Step 3: Cross multiply
   9,383.20x = 12,946.89 × 5,403.25
4. Step 4: Simplify right side
   9,383.20x = 69,955,283.39
5. Step 5: Solve for x
   x = 69,955,283.39/9,383.20
6. Step 6: Final answer
   x = 7,455.38