Finding the Fourth Proportional to 9,939.92, 13,719.14 and 5,749.52

Step by Step Solution

1. Step 1: Write the proportion equation
   9,939.92 : 13,719.14 = 5,749.52 : x
2. Step 2: Convert to fraction form
   9,939.92/13,719.14 = 5,749.52/x
3. Step 3: Cross multiply
   9,939.92x = 13,719.14 × 5,749.52
4. Step 4: Simplify right side
   9,939.92x = 78,878,469.81
5. Step 5: Solve for x
   x = 78,878,469.81/9,939.92
6. Step 6: Final answer
   x = 7,935.52