Finding the Fourth Proportional to 10,269.54, 14,171.94 and 5,553.90

Step by Step Solution

1. Step 1: Write the proportion equation
   10,269.54 : 14,171.94 = 5,553.90 : x
2. Step 2: Convert to fraction form
   10,269.54/14,171.94 = 5,553.90/x
3. Step 3: Cross multiply
   10,269.54x = 14,171.94 × 5,553.90
4. Step 4: Simplify right side
   10,269.54x = 78,709,537.57
5. Step 5: Solve for x
   x = 78,709,537.57/10,269.54
6. Step 6: Final answer
   x = 7,664.37