Finding the Fourth Proportional to 9,960.37, 13,745.63 and 5,711.01

Step by Step Solution

1. Step 1: Write the proportion equation
   9,960.37 : 13,745.63 = 5,711.01 : x
2. Step 2: Convert to fraction form
   9,960.37/13,745.63 = 5,711.01/x
3. Step 3: Cross multiply
   9,960.37x = 13,745.63 × 5,711.01
4. Step 4: Simplify right side
   9,960.37x = 78,501,393.12
5. Step 5: Solve for x
   x = 78,501,393.12/9,960.37
6. Step 6: Final answer
   x = 7,881.38