Finding the Fourth Proportional to 16,216.34, 22,378.34 and 9,145.04

Step by Step Solution

1. Step 1: Write the proportion equation
   16,216.34 : 22,378.34 = 9,145.04 : x
2. Step 2: Convert to fraction form
   16,216.34/22,378.34 = 9,145.04/x
3. Step 3: Cross multiply
   16,216.34x = 22,378.34 × 9,145.04
4. Step 4: Simplify right side
   16,216.34x = 204,650,814.43
5. Step 5: Solve for x
   x = 204,650,814.43/16,216.34
6. Step 6: Final answer
   x = 12,620.04