Finding the Fourth Proportional to 11,951.37, 17,929.33 and 5,711.87

Step by Step Solution

1. Step 1: Write the proportion equation
   11,951.37 : 17,929.33 = 5,711.87 : x
2. Step 2: Convert to fraction form
   11,951.37/17,929.33 = 5,711.87/x
3. Step 3: Cross multiply
   11,951.37x = 17,929.33 × 5,711.87
4. Step 4: Simplify right side
   11,951.37x = 102,410,002.15
5. Step 5: Solve for x
   x = 102,410,002.15/11,951.37
6. Step 6: Final answer
   x = 8,568.89