Finding the Fourth Proportional to 9,945.09, 13,724.55 and 5,469.17

Step by Step Solution

1. Step 1: Write the proportion equation
   9,945.09 : 13,724.55 = 5,469.17 : x
2. Step 2: Convert to fraction form
   9,945.09/13,724.55 = 5,469.17/x
3. Step 3: Cross multiply
   9,945.09x = 13,724.55 × 5,469.17
4. Step 4: Simplify right side
   9,945.09x = 75,061,828.50
5. Step 5: Solve for x
   x = 75,061,828.50/9,945.09
6. Step 6: Final answer
   x = 7,547.63