Finding the Fourth Proportional to 9,942.50, 13,720.65 and 5,751.02

Step by Step Solution

1. Step 1: Write the proportion equation
   9,942.50 : 13,720.65 = 5,751.02 : x
2. Step 2: Convert to fraction form
   9,942.50/13,720.65 = 5,751.02/x
3. Step 3: Cross multiply
   9,942.50x = 13,720.65 × 5,751.02
4. Step 4: Simplify right side
   9,942.50x = 78,907,732.56
5. Step 5: Solve for x
   x = 78,907,732.56/9,942.50
6. Step 6: Final answer
   x = 7,936.41