Finding the Fourth Proportional to 16,993.58, 23,450.81 and 9,439.57

Step by Step Solution

1. Step 1: Write the proportion equation
   16,993.58 : 23,450.81 = 9,439.57 : x
2. Step 2: Convert to fraction form
   16,993.58/23,450.81 = 9,439.57/x
3. Step 3: Cross multiply
   16,993.58x = 23,450.81 × 9,439.57
4. Step 4: Simplify right side
   16,993.58x = 221,365,562.55
5. Step 5: Solve for x
   x = 221,365,562.55/16,993.58
6. Step 6: Final answer
   x = 13,026.42