Finding the Fourth Proportional to 16,216.95, 22,378.59 and 9,143.34

Step by Step Solution

1. Step 1: Write the proportion equation
   16,216.95 : 22,378.59 = 9,143.34 : x
2. Step 2: Convert to fraction form
   16,216.95/22,378.59 = 9,143.34/x
3. Step 3: Cross multiply
   16,216.95x = 22,378.59 × 9,143.34
4. Step 4: Simplify right side
   16,216.95x = 204,615,057.09
5. Step 5: Solve for x
   x = 204,615,057.09/16,216.95
6. Step 6: Final answer
   x = 12,617.36