Finding the Fourth Proportional to 11,960.49, 16,509.15 and 7,711.56

Step by Step Solution

1. Step 1: Write the proportion equation
   11,960.49 : 16,509.15 = 7,711.56 : x
2. Step 2: Convert to fraction form
   11,960.49/16,509.15 = 7,711.56/x
3. Step 3: Cross multiply
   11,960.49x = 16,509.15 × 7,711.56
4. Step 4: Simplify right side
   11,960.49x = 127,311,300.77
5. Step 5: Solve for x
   x = 127,311,300.77/11,960.49
6. Step 6: Final answer
   x = 10,644.32