Finding the Fourth Proportional to 16,212.34, 22,371.69 and 9,140.50

Step by Step Solution

1. Step 1: Write the proportion equation
   16,212.34 : 22,371.69 = 9,140.50 : x
2. Step 2: Convert to fraction form
   16,212.34/22,371.69 = 9,140.50/x
3. Step 3: Cross multiply
   16,212.34x = 22,371.69 × 9,140.50
4. Step 4: Simplify right side
   16,212.34x = 204,488,432.45
5. Step 5: Solve for x
   x = 204,488,432.45/16,212.34
6. Step 6: Final answer
   x = 12,613.13