Finding the Fourth Proportional to 9,945.27, 13,724.53 and 5,469.05

Step by Step Solution

1. Step 1: Write the proportion equation
   9,945.27 : 13,724.53 = 5,469.05 : x
2. Step 2: Convert to fraction form
   9,945.27/13,724.53 = 5,469.05/x
3. Step 3: Cross multiply
   9,945.27x = 13,724.53 × 5,469.05
4. Step 4: Simplify right side
   9,945.27x = 75,060,161.44
5. Step 5: Solve for x
   x = 75,060,161.44/9,945.27
6. Step 6: Final answer
   x = 7,547.32