Finding the Fourth Proportional to 16,982.10, 23,436.78 and 9,429.90

Step by Step Solution

1. Step 1: Write the proportion equation
   16,982.10 : 23,436.78 = 9,429.90 : x
2. Step 2: Convert to fraction form
   16,982.10/23,436.78 = 9,429.90/x
3. Step 3: Cross multiply
   16,982.10x = 23,436.78 × 9,429.90
4. Step 4: Simplify right side
   16,982.10x = 221,006,491.72
5. Step 5: Solve for x
   x = 221,006,491.72/16,982.10
6. Step 6: Final answer
   x = 13,014.08