Finding the Fourth Proportional to 16,967.90, 23,414.59 and 9,414.21

Step by Step Solution

1. Step 1: Write the proportion equation
   16,967.90 : 23,414.59 = 9,414.21 : x
2. Step 2: Convert to fraction form
   16,967.90/23,414.59 = 9,414.21/x
3. Step 3: Cross multiply
   16,967.90x = 23,414.59 × 9,414.21
4. Step 4: Simplify right side
   16,967.90x = 220,429,820.25
5. Step 5: Solve for x
   x = 220,429,820.25/16,967.90
6. Step 6: Final answer
   x = 12,990.99