Finding the Fourth Proportional to 9,945.84, 13,724.32 and 5,469.52

Step by Step Solution

1. Step 1: Write the proportion equation
   9,945.84 : 13,724.32 = 5,469.52 : x
2. Step 2: Convert to fraction form
   9,945.84/13,724.32 = 5,469.52/x
3. Step 3: Cross multiply
   9,945.84x = 13,724.32 × 5,469.52
4. Step 4: Simplify right side
   9,945.84x = 75,065,442.73
5. Step 5: Solve for x
   x = 75,065,442.73/9,945.84
6. Step 6: Final answer
   x = 7,547.42