Finding the Fourth Proportional to 9,942.75, 13,721.00 and 5,751.27

Step by Step Solution

1. Step 1: Write the proportion equation
   9,942.75 : 13,721.00 = 5,751.27 : x
2. Step 2: Convert to fraction form
   9,942.75/13,721.00 = 5,751.27/x
3. Step 3: Cross multiply
   9,942.75x = 13,721.00 × 5,751.27
4. Step 4: Simplify right side
   9,942.75x = 78,913,146.91
5. Step 5: Solve for x
   x = 78,913,146.91/9,942.75
6. Step 6: Final answer
   x = 7,936.75