Finding the Fourth Proportional to 11,960.31, 17,928.83 and 5,718.71

Step by Step Solution

1. Step 1: Write the proportion equation
   11,960.31 : 17,928.83 = 5,718.71 : x
2. Step 2: Convert to fraction form
   11,960.31/17,928.83 = 5,718.71/x
3. Step 3: Cross multiply
   11,960.31x = 17,928.83 × 5,718.71
4. Step 4: Simplify right side
   11,960.31x = 102,529,661.17
5. Step 5: Solve for x
   x = 102,529,661.17/11,960.31
6. Step 6: Final answer
   x = 8,572.49