Finding the Fourth Proportional to 16,290.72, 22,477.50 and 9,214.56

Step by Step Solution

1. Step 1: Write the proportion equation
   16,290.72 : 22,477.50 = 9,214.56 : x
2. Step 2: Convert to fraction form
   16,290.72/22,477.50 = 9,214.56/x
3. Step 3: Cross multiply
   16,290.72x = 22,477.50 × 9,214.56
4. Step 4: Simplify right side
   16,290.72x = 207,120,272.40
5. Step 5: Solve for x
   x = 207,120,272.40/16,290.72
6. Step 6: Final answer
   x = 12,714.00