Finding the Fourth Proportional to 9,711.95, 13,399.04 and 5,731.07

Step by Step Solution

1. Step 1: Write the proportion equation
   9,711.95 : 13,399.04 = 5,731.07 : x
2. Step 2: Convert to fraction form
   9,711.95/13,399.04 = 5,731.07/x
3. Step 3: Cross multiply
   9,711.95x = 13,399.04 × 5,731.07
4. Step 4: Simplify right side
   9,711.95x = 76,790,807.52
5. Step 5: Solve for x
   x = 76,790,807.52/9,711.95
6. Step 6: Final answer
   x = 7,906.84