Finding the Fourth Proportional to 9,234.26, 12,743.54 and 5,042.78

Step by Step Solution

1. Step 1: Write the proportion equation
   9,234.26 : 12,743.54 = 5,042.78 : x
2. Step 2: Convert to fraction form
   9,234.26/12,743.54 = 5,042.78/x
3. Step 3: Cross multiply
   9,234.26x = 12,743.54 × 5,042.78
4. Step 4: Simplify right side
   9,234.26x = 64,262,868.64
5. Step 5: Solve for x
   x = 64,262,868.64/9,234.26
6. Step 6: Final answer
   x = 6,959.18