Finding the Fourth Proportional to 22,111.92, 30,514.05 and 12,679.74

Step by Step Solution

1. Step 1: Write the proportion equation
   22,111.92 : 30,514.05 = 12,679.74 : x
2. Step 2: Convert to fraction form
   22,111.92/30,514.05 = 12,679.74/x
3. Step 3: Cross multiply
   22,111.92x = 30,514.05 × 12,679.74
4. Step 4: Simplify right side
   22,111.92x = 386,910,220.35
5. Step 5: Solve for x
   x = 386,910,220.35/22,111.92
6. Step 6: Final answer
   x = 17,497.81