Finding the Fourth Proportional to 22,180.79, 30,609.62 and 12,109.47

Step by Step Solution

1. Step 1: Write the proportion equation
   22,180.79 : 30,609.62 = 12,109.47 : x
2. Step 2: Convert to fraction form
   22,180.79/30,609.62 = 12,109.47/x
3. Step 3: Cross multiply
   22,180.79x = 30,609.62 × 12,109.47
4. Step 4: Simplify right side
   22,180.79x = 370,666,214.55
5. Step 5: Solve for x
   x = 370,666,214.55/22,180.79
6. Step 6: Final answer
   x = 16,711.14