Finding the Fourth Proportional to 16,958.18, 23,401.85 and 9,404.50

Step by Step Solution

1. Step 1: Write the proportion equation
   16,958.18 : 23,401.85 = 9,404.50 : x
2. Step 2: Convert to fraction form
   16,958.18/23,401.85 = 9,404.50/x
3. Step 3: Cross multiply
   16,958.18x = 23,401.85 × 9,404.50
4. Step 4: Simplify right side
   16,958.18x = 220,082,534.29
5. Step 5: Solve for x
   x = 220,082,534.29/16,958.18
6. Step 6: Final answer
   x = 12,977.96