Finding the Fourth Proportional to 22,179.76, 30,613.08 and 15,109

Step by Step Solution

1. Step 1: Write the proportion equation
   22,179.76 : 30,613.08 = 15,109 : x
2. Step 2: Convert to fraction form
   22,179.76/30,613.08 = 15,109/x
3. Step 3: Cross multiply
   22,179.76x = 30,613.08 × 15,109
4. Step 4: Simplify right side
   22,179.76x = 462,533,025.72
5. Step 5: Solve for x
   x = 462,533,025.72/22,179.76
6. Step 6: Final answer
   x = 20,853.83