Finding the Fourth Proportional to 16,200.21, 22,357.31 and 12,214.29

Step by Step Solution

1. Step 1: Write the proportion equation
   16,200.21 : 22,357.31 = 12,214.29 : x
2. Step 2: Convert to fraction form
   16,200.21/22,357.31 = 12,214.29/x
3. Step 3: Cross multiply
   16,200.21x = 22,357.31 × 12,214.29
4. Step 4: Simplify right side
   16,200.21x = 273,078,586.71
5. Step 5: Solve for x
   x = 273,078,586.71/16,200.21
6. Step 6: Final answer
   x = 16,856.49