Finding the Fourth Proportional to 22,180.88, 30,609.33 and 12,109.20

Step by Step Solution

1. Step 1: Write the proportion equation
   22,180.88 : 30,609.33 = 12,109.20 : x
2. Step 2: Convert to fraction form
   22,180.88/30,609.33 = 12,109.20/x
3. Step 3: Cross multiply
   22,180.88x = 30,609.33 × 12,109.20
4. Step 4: Simplify right side
   22,180.88x = 370,654,498.84
5. Step 5: Solve for x
   x = 370,654,498.84/22,180.88
6. Step 6: Final answer
   x = 16,710.54