Finding the Fourth Proportional to 9,960.96, 13,745.82 and 5,712.69

Step by Step Solution

1. Step 1: Write the proportion equation
   9,960.96 : 13,745.82 = 5,712.69 : x
2. Step 2: Convert to fraction form
   9,960.96/13,745.82 = 5,712.69/x
3. Step 3: Cross multiply
   9,960.96x = 13,745.82 × 5,712.69
4. Step 4: Simplify right side
   9,960.96x = 78,525,608.46
5. Step 5: Solve for x
   x = 78,525,608.46/9,960.96
6. Step 6: Final answer
   x = 7,883.34