Finding the Fourth Proportional to 22,169.72, 30,594.84 and 12,738.08

Step by Step Solution

1. Step 1: Write the proportion equation
   22,169.72 : 30,594.84 = 12,738.08 : x
2. Step 2: Convert to fraction form
   22,169.72/30,594.84 = 12,738.08/x
3. Step 3: Cross multiply
   22,169.72x = 30,594.84 × 12,738.08
4. Step 4: Simplify right side
   22,169.72x = 389,719,519.51
5. Step 5: Solve for x
   x = 389,719,519.51/22,169.72
6. Step 6: Final answer
   x = 17,578.91