Finding the Fourth Proportional to 9,142.85, 12,622.15 and 5,743.41

Step by Step Solution

1. Step 1: Write the proportion equation
   9,142.85 : 12,622.15 = 5,743.41 : x
2. Step 2: Convert to fraction form
   9,142.85/12,622.15 = 5,743.41/x
3. Step 3: Cross multiply
   9,142.85x = 12,622.15 × 5,743.41
4. Step 4: Simplify right side
   9,142.85x = 72,494,158.53
5. Step 5: Solve for x
   x = 72,494,158.53/9,142.85
6. Step 6: Final answer
   x = 7,929.06