Finding the Fourth Proportional to 9,945.67, 13,724.76 and 5,469.88

Step by Step Solution

1. Step 1: Write the proportion equation
   9,945.67 : 13,724.76 = 5,469.88 : x
2. Step 2: Convert to fraction form
   9,945.67/13,724.76 = 5,469.88/x
3. Step 3: Cross multiply
   9,945.67x = 13,724.76 × 5,469.88
4. Step 4: Simplify right side
   9,945.67x = 75,072,790.23
5. Step 5: Solve for x
   x = 75,072,790.23/9,945.67
6. Step 6: Final answer
   x = 7,548.29