Finding the Fourth Proportional to 9,945.30, 13,724.91 and 5,469.42

Step by Step Solution

1. Step 1: Write the proportion equation
   9,945.30 : 13,724.91 = 5,469.42 : x
2. Step 2: Convert to fraction form
   9,945.30/13,724.91 = 5,469.42/x
3. Step 3: Cross multiply
   9,945.30x = 13,724.91 × 5,469.42
4. Step 4: Simplify right side
   9,945.30x = 75,067,297.25
5. Step 5: Solve for x
   x = 75,067,297.25/9,945.30
6. Step 6: Final answer
   x = 7,548.02