Finding the Fourth Proportional to 11,687.78, 17,510.50 and 5,367.94

Step by Step Solution

1. Step 1: Write the proportion equation
   11,687.78 : 17,510.50 = 5,367.94 : x
2. Step 2: Convert to fraction form
   11,687.78/17,510.50 = 5,367.94/x
3. Step 3: Cross multiply
   11,687.78x = 17,510.50 × 5,367.94
4. Step 4: Simplify right side
   11,687.78x = 93,995,313.37
5. Step 5: Solve for x
   x = 93,995,313.37/11,687.78
6. Step 6: Final answer
   x = 8,042.19