Finding the Fourth Proportional to 11,719.62, 16,178.94 and 7,962.57

Step by Step Solution

1. Step 1: Write the proportion equation
   11,719.62 : 16,178.94 = 7,962.57 : x
2. Step 2: Convert to fraction form
   11,719.62/16,178.94 = 7,962.57/x
3. Step 3: Cross multiply
   11,719.62x = 16,178.94 × 7,962.57
4. Step 4: Simplify right side
   11,719.62x = 128,825,942.28
5. Step 5: Solve for x
   x = 128,825,942.28/11,719.62
6. Step 6: Final answer
   x = 10,992.33