Finding the Fourth Proportional to 16,434.82, 22,680.57 and 9,361.09

Step by Step Solution

1. Step 1: Write the proportion equation
   16,434.82 : 22,680.57 = 9,361.09 : x
2. Step 2: Convert to fraction form
   16,434.82/22,680.57 = 9,361.09/x
3. Step 3: Cross multiply
   16,434.82x = 22,680.57 × 9,361.09
4. Step 4: Simplify right side
   16,434.82x = 212,314,857.02
5. Step 5: Solve for x
   x = 212,314,857.02/16,434.82
6. Step 6: Final answer
   x = 12,918.60