Finding the Fourth Proportional to 16,729.40, 23,086.42 and 9,175.58

Step by Step Solution

1. Step 1: Write the proportion equation
   16,729.40 : 23,086.42 = 9,175.58 : x
2. Step 2: Convert to fraction form
   16,729.40/23,086.42 = 9,175.58/x
3. Step 3: Cross multiply
   16,729.40x = 23,086.42 × 9,175.58
4. Step 4: Simplify right side
   16,729.40x = 211,831,241.83
5. Step 5: Solve for x
   x = 211,831,241.83/16,729.40
6. Step 6: Final answer
   x = 12,662.21