Finding the Fourth Proportional to 16,906.98, 23,329.77 and 9,351.42

Step by Step Solution

1. Step 1: Write the proportion equation
   16,906.98 : 23,329.77 = 9,351.42 : x
2. Step 2: Convert to fraction form
   16,906.98/23,329.77 = 9,351.42/x
3. Step 3: Cross multiply
   16,906.98x = 23,329.77 × 9,351.42
4. Step 4: Simplify right side
   16,906.98x = 218,166,477.77
5. Step 5: Solve for x
   x = 218,166,477.77/16,906.98
6. Step 6: Final answer
   x = 12,903.93