Finding the Fourth Proportional to 16,993.10, 23,450.88 and 9,439.05

Step by Step Solution

1. Step 1: Write the proportion equation
   16,993.10 : 23,450.88 = 9,439.05 : x
2. Step 2: Convert to fraction form
   16,993.10/23,450.88 = 9,439.05/x
3. Step 3: Cross multiply
   16,993.10x = 23,450.88 × 9,439.05
4. Step 4: Simplify right side
   16,993.10x = 221,354,028.86
5. Step 5: Solve for x
   x = 221,354,028.86/16,993.10
6. Step 6: Final answer
   x = 13,026.12