Finding the Fourth Proportional to 16,942.91, 23,380.15 and 9,388.79

Step by Step Solution

1. Step 1: Write the proportion equation
   16,942.91 : 23,380.15 = 9,388.79 : x
2. Step 2: Convert to fraction form
   16,942.91/23,380.15 = 9,388.79/x
3. Step 3: Cross multiply
   16,942.91x = 23,380.15 × 9,388.79
4. Step 4: Simplify right side
   16,942.91x = 219,511,353.50
5. Step 5: Solve for x
   x = 219,511,353.50/16,942.91
6. Step 6: Final answer
   x = 12,955.95