Finding the Fourth Proportional to 22,170.50, 30,595.02 and 12,738.32

Step by Step Solution

1. Step 1: Write the proportion equation
   22,170.50 : 30,595.02 = 12,738.32 : x
2. Step 2: Convert to fraction form
   22,170.50/30,595.02 = 12,738.32/x
3. Step 3: Cross multiply
   22,170.50x = 30,595.02 × 12,738.32
4. Step 4: Simplify right side
   22,170.50x = 389,729,155.17
5. Step 5: Solve for x
   x = 389,729,155.17/22,170.50
6. Step 6: Final answer
   x = 17,578.73