Finding the Fourth Proportional to 22,072.30, 30,458.78 and 12,512.05

Step by Step Solution

1. Step 1: Write the proportion equation
   22,072.30 : 30,458.78 = 12,512.05 : x
2. Step 2: Convert to fraction form
   22,072.30/30,458.78 = 12,512.05/x
3. Step 3: Cross multiply
   22,072.30x = 30,458.78 × 12,512.05
4. Step 4: Simplify right side
   22,072.30x = 381,101,626.01
5. Step 5: Solve for x
   x = 381,101,626.01/22,072.30
6. Step 6: Final answer
   x = 17,266.06