Finding the Fourth Proportional to 10,302.78, 14,226.46 and 7,661.96

Step by Step Solution

1. Step 1: Write the proportion equation
   10,302.78 : 14,226.46 = 7,661.96 : x
2. Step 2: Convert to fraction form
   10,302.78/14,226.46 = 7,661.96/x
3. Step 3: Cross multiply
   10,302.78x = 14,226.46 × 7,661.96
4. Step 4: Simplify right side
   10,302.78x = 109,002,567.46
5. Step 5: Solve for x
   x = 109,002,567.46/10,302.78
6. Step 6: Final answer
   x = 10,579.92