Finding the Fourth Proportional to 8,942.90, 12,335.59 and 5,760.35

Step by Step Solution

1. Step 1: Write the proportion equation
   8,942.90 : 12,335.59 = 5,760.35 : x
2. Step 2: Convert to fraction form
   8,942.90/12,335.59 = 5,760.35/x
3. Step 3: Cross multiply
   8,942.90x = 12,335.59 × 5,760.35
4. Step 4: Simplify right side
   8,942.90x = 71,057,315.86
5. Step 5: Solve for x
   x = 71,057,315.86/8,942.90
6. Step 6: Final answer
   x = 7,945.67