Finding the Fourth Proportional to 9,945.53, 13,725.17 and 5,469.62

Step by Step Solution

1. Step 1: Write the proportion equation
   9,945.53 : 13,725.17 = 5,469.62 : x
2. Step 2: Convert to fraction form
   9,945.53/13,725.17 = 5,469.62/x
3. Step 3: Cross multiply
   9,945.53x = 13,725.17 × 5,469.62
4. Step 4: Simplify right side
   9,945.53x = 75,071,409.38
5. Step 5: Solve for x
   x = 75,071,409.38/9,945.53
6. Step 6: Final answer
   x = 7,548.26