Finding the Fourth Proportional to 16,790.09, 23,172.31 and 9,622.33

Step by Step Solution

1. Step 1: Write the proportion equation
   16,790.09 : 23,172.31 = 9,622.33 : x
2. Step 2: Convert to fraction form
   16,790.09/23,172.31 = 9,622.33/x
3. Step 3: Cross multiply
   16,790.09x = 23,172.31 × 9,622.33
4. Step 4: Simplify right side
   16,790.09x = 222,971,567.78
5. Step 5: Solve for x
   x = 222,971,567.78/16,790.09
6. Step 6: Final answer
   x = 13,279.95