Finding the Fourth Proportional to 22,185.05, 30,615.42 and 12,113.70

Step by Step Solution

1. Step 1: Write the proportion equation
   22,185.05 : 30,615.42 = 12,113.70 : x
2. Step 2: Convert to fraction form
   22,185.05/30,615.42 = 12,113.70/x
3. Step 3: Cross multiply
   22,185.05x = 30,615.42 × 12,113.70
4. Step 4: Simplify right side
   22,185.05x = 370,866,013.25
5. Step 5: Solve for x
   x = 370,866,013.25/22,185.05
6. Step 6: Final answer
   x = 16,716.94