Finding the Fourth Proportional to 10,269.69, 14,172.17 and 5,553.97

Step by Step Solution

1. Step 1: Write the proportion equation
   10,269.69 : 14,172.17 = 5,553.97 : x
2. Step 2: Convert to fraction form
   10,269.69/14,172.17 = 5,553.97/x
3. Step 3: Cross multiply
   10,269.69x = 14,172.17 × 5,553.97
4. Step 4: Simplify right side
   10,269.69x = 78,711,708.38
5. Step 5: Solve for x
   x = 78,711,708.38/10,269.69
6. Step 6: Final answer
   x = 7,664.47