Finding the Fourth Proportional to 16,109.22, 22,231.32 and 9,393.78

Step by Step Solution

1. Step 1: Write the proportion equation
   16,109.22 : 22,231.32 = 9,393.78 : x
2. Step 2: Convert to fraction form
   16,109.22/22,231.32 = 9,393.78/x
3. Step 3: Cross multiply
   16,109.22x = 22,231.32 × 9,393.78
4. Step 4: Simplify right side
   16,109.22x = 208,836,129.19
5. Step 5: Solve for x
   x = 208,836,129.19/16,109.22
6. Step 6: Final answer
   x = 12,963.76