Finding the Fourth Proportional to 22,260.83, 30,719.94 and 12,189.27

Step by Step Solution

1. Step 1: Write the proportion equation
   22,260.83 : 30,719.94 = 12,189.27 : x
2. Step 2: Convert to fraction form
   22,260.83/30,719.94 = 12,189.27/x
3. Step 3: Cross multiply
   22,260.83x = 30,719.94 × 12,189.27
4. Step 4: Simplify right side
   22,260.83x = 374,453,643.04
5. Step 5: Solve for x
   x = 374,453,643.04/22,260.83
6. Step 6: Final answer
   x = 16,821.19