Finding the Fourth Proportional to 9,234.56, 12,743.70 and 5,042.72

Step by Step Solution

1. Step 1: Write the proportion equation
   9,234.56 : 12,743.70 = 5,042.72 : x
2. Step 2: Convert to fraction form
   9,234.56/12,743.70 = 5,042.72/x
3. Step 3: Cross multiply
   9,234.56x = 12,743.70 × 5,042.72
4. Step 4: Simplify right side
   9,234.56x = 64,262,910.86
5. Step 5: Solve for x
   x = 64,262,910.86/9,234.56
6. Step 6: Final answer
   x = 6,958.96