Finding the Fourth Proportional to 16,221.15, 22,384.50 and 9,148.23

Step by Step Solution

1. Step 1: Write the proportion equation
   16,221.15 : 22,384.50 = 9,148.23 : x
2. Step 2: Convert to fraction form
   16,221.15/22,384.50 = 9,148.23/x
3. Step 3: Cross multiply
   16,221.15x = 22,384.50 × 9,148.23
4. Step 4: Simplify right side
   16,221.15x = 204,778,396.77
5. Step 5: Solve for x
   x = 204,778,396.77/16,221.15
6. Step 6: Final answer
   x = 12,624.16