Finding the Fourth Proportional to 16,204.61, 22,362.80 and 9,131.28

Step by Step Solution

1. Step 1: Write the proportion equation
   16,204.61 : 22,362.80 = 9,131.28 : x
2. Step 2: Convert to fraction form
   16,204.61/22,362.80 = 9,131.28/x
3. Step 3: Cross multiply
   16,204.61x = 22,362.80 × 9,131.28
4. Step 4: Simplify right side
   16,204.61x = 204,200,942.73
5. Step 5: Solve for x
   x = 204,200,942.73/16,204.61
6. Step 6: Final answer
   x = 12,601.41