Finding the Fourth Proportional to 10,269.36, 14,171.72 and 5,553.65

Step by Step Solution

1. Step 1: Write the proportion equation
   10,269.36 : 14,171.72 = 5,553.65 : x
2. Step 2: Convert to fraction form
   10,269.36/14,171.72 = 5,553.65/x
3. Step 3: Cross multiply
   10,269.36x = 14,171.72 × 5,553.65
4. Step 4: Simplify right side
   10,269.36x = 78,704,674.15
5. Step 5: Solve for x
   x = 78,704,674.15/10,269.36
6. Step 6: Final answer
   x = 7,664.03