Finding the Fourth Proportional to 22,260.89, 30,718.83 and 12,187.40

Step by Step Solution

1. Step 1: Write the proportion equation
   22,260.89 : 30,718.83 = 12,187.40 : x
2. Step 2: Convert to fraction form
   22,260.89/30,718.83 = 12,187.40/x
3. Step 3: Cross multiply
   22,260.89x = 30,718.83 × 12,187.40
4. Step 4: Simplify right side
   22,260.89x = 374,382,515.15
5. Step 5: Solve for x
   x = 374,382,515.15/22,260.89
6. Step 6: Final answer
   x = 16,817.95