Finding the Fourth Proportional to 22,189.50, 30,621.75 and 12,118.23

Step by Step Solution

1. Step 1: Write the proportion equation
   22,189.50 : 30,621.75 = 12,118.23 : x
2. Step 2: Convert to fraction form
   22,189.50/30,621.75 = 12,118.23/x
3. Step 3: Cross multiply
   22,189.50x = 30,621.75 × 12,118.23
4. Step 4: Simplify right side
   22,189.50x = 371,081,498.28
5. Step 5: Solve for x
   x = 371,081,498.28/22,189.50
6. Step 6: Final answer
   x = 16,723.30