Finding the Fourth Proportional to 23,105.62, 34,673.80 and 12,578.29

Step by Step Solution

1. Step 1: Write the proportion equation
   23,105.62 : 34,673.80 = 12,578.29 : x
2. Step 2: Convert to fraction form
   23,105.62/34,673.80 = 12,578.29/x
3. Step 3: Cross multiply
   23,105.62x = 34,673.80 × 12,578.29
4. Step 4: Simplify right side
   23,105.62x = 436,137,111.80
5. Step 5: Solve for x
   x = 436,137,111.80/23,105.62
6. Step 6: Final answer
   x = 18,875.80