Finding the Fourth Proportional to 9,388.04, 12,957.02 and 5,408.48

Step by Step Solution

1. Step 1: Write the proportion equation
   9,388.04 : 12,957.02 = 5,408.48 : x
2. Step 2: Convert to fraction form
   9,388.04/12,957.02 = 5,408.48/x
3. Step 3: Cross multiply
   9,388.04x = 12,957.02 × 5,408.48
4. Step 4: Simplify right side
   9,388.04x = 70,077,691.70
5. Step 5: Solve for x
   x = 70,077,691.70/9,388.04
6. Step 6: Final answer
   x = 7,464.58