Finding the Fourth Proportional to 22,251.67, 30,708.15 and 12,693.12

Step by Step Solution

1. Step 1: Write the proportion equation
   22,251.67 : 30,708.15 = 12,693.12 : x
2. Step 2: Convert to fraction form
   22,251.67/30,708.15 = 12,693.12/x
3. Step 3: Cross multiply
   22,251.67x = 30,708.15 × 12,693.12
4. Step 4: Simplify right side
   22,251.67x = 389,782,079.39
5. Step 5: Solve for x
   x = 389,782,079.39/22,251.67
6. Step 6: Final answer
   x = 17,516.98