Finding the Fourth Proportional to 16,221.42, 22,384.80 and 9,147.84

Step by Step Solution

1. Step 1: Write the proportion equation
   16,221.42 : 22,384.80 = 9,147.84 : x
2. Step 2: Convert to fraction form
   16,221.42/22,384.80 = 9,147.84/x
3. Step 3: Cross multiply
   16,221.42x = 22,384.80 × 9,147.84
4. Step 4: Simplify right side
   16,221.42x = 204,772,568.83
5. Step 5: Solve for x
   x = 204,772,568.83/16,221.42
6. Step 6: Final answer
   x = 12,623.59