Finding the Fourth Proportional to 22,106.50, 30,506.98 and 12,170.50

Step by Step Solution

1. Step 1: Write the proportion equation
   22,106.50 : 30,506.98 = 12,170.50 : x
2. Step 2: Convert to fraction form
   22,106.50/30,506.98 = 12,170.50/x
3. Step 3: Cross multiply
   22,106.50x = 30,506.98 × 12,170.50
4. Step 4: Simplify right side
   22,106.50x = 371,285,200.09
5. Step 5: Solve for x
   x = 371,285,200.09/22,106.50
6. Step 6: Final answer
   x = 16,795.30