Finding the Fourth Proportional to 9,942.26, 14,910.78 and 5,255.96

Step by Step Solution

1. Step 1: Write the proportion equation
   9,942.26 : 14,910.78 = 5,255.96 : x
2. Step 2: Convert to fraction form
   9,942.26/14,910.78 = 5,255.96/x
3. Step 3: Cross multiply
   9,942.26x = 14,910.78 × 5,255.96
4. Step 4: Simplify right side
   9,942.26x = 78,370,463.25
5. Step 5: Solve for x
   x = 78,370,463.25/9,942.26
6. Step 6: Final answer
   x = 7,882.56