Finding the Fourth Proportional to 22,958.64, 34,442.82 and 8,172.09

Step by Step Solution

1. Step 1: Write the proportion equation
   22,958.64 : 34,442.82 = 8,172.09 : x
2. Step 2: Convert to fraction form
   22,958.64/34,442.82 = 8,172.09/x
3. Step 3: Cross multiply
   22,958.64x = 34,442.82 × 8,172.09
4. Step 4: Simplify right side
   22,958.64x = 281,469,824.89
5. Step 5: Solve for x
   x = 281,469,824.89/22,958.64
6. Step 6: Final answer
   x = 12,259.86