Finding the Fourth Proportional to 16,055.70, 22,147.71 and 9,340.55

Step by Step Solution

1. Step 1: Write the proportion equation
   16,055.70 : 22,147.71 = 9,340.55 : x
2. Step 2: Convert to fraction form
   16,055.70/22,147.71 = 9,340.55/x
3. Step 3: Cross multiply
   16,055.70x = 22,147.71 × 9,340.55
4. Step 4: Simplify right side
   16,055.70x = 206,871,729.93
5. Step 5: Solve for x
   x = 206,871,729.93/16,055.70
6. Step 6: Final answer
   x = 12,884.63