Finding the Fourth Proportional to 11,787.67, 17,677.05 and 5,940.28

Step by Step Solution

1. Step 1: Write the proportion equation
   11,787.67 : 17,677.05 = 5,940.28 : x
2. Step 2: Convert to fraction form
   11,787.67/17,677.05 = 5,940.28/x
3. Step 3: Cross multiply
   11,787.67x = 17,677.05 × 5,940.28
4. Step 4: Simplify right side
   11,787.67x = 105,006,626.57
5. Step 5: Solve for x
   x = 105,006,626.57/11,787.67
6. Step 6: Final answer
   x = 8,908.17