Finding the Fourth Proportional to 9,383.12, 12,949.28 and 5,404.16

Step by Step Solution

1. Step 1: Write the proportion equation
   9,383.12 : 12,949.28 = 5,404.16 : x
2. Step 2: Convert to fraction form
   9,383.12/12,949.28 = 5,404.16/x
3. Step 3: Cross multiply
   9,383.12x = 12,949.28 × 5,404.16
4. Step 4: Simplify right side
   9,383.12x = 69,979,981.00
5. Step 5: Solve for x
   x = 69,979,981.00/9,383.12
6. Step 6: Final answer
   x = 7,458.07