Finding the Fourth Proportional to 9,945.02, 13,724.12 and 5,469.07

Step by Step Solution

1. Step 1: Write the proportion equation
   9,945.02 : 13,724.12 = 5,469.07 : x
2. Step 2: Convert to fraction form
   9,945.02/13,724.12 = 5,469.07/x
3. Step 3: Cross multiply
   9,945.02x = 13,724.12 × 5,469.07
4. Step 4: Simplify right side
   9,945.02x = 75,058,172.97
5. Step 5: Solve for x
   x = 75,058,172.97/9,945.02
6. Step 6: Final answer
   x = 7,547.31