Finding the Fourth Proportional to 22,189.69, 30,621.86 and 12,118.35

Step by Step Solution

1. Step 1: Write the proportion equation
   22,189.69 : 30,621.86 = 12,118.35 : x
2. Step 2: Convert to fraction form
   22,189.69/30,621.86 = 12,118.35/x
3. Step 3: Cross multiply
   22,189.69x = 30,621.86 × 12,118.35
4. Step 4: Simplify right side
   22,189.69x = 371,086,417.13
5. Step 5: Solve for x
   x = 371,086,417.13/22,189.69
6. Step 6: Final answer
   x = 16,723.37