Finding the Fourth Proportional to 22,111.50, 30,514.14 and 12,680.94

Step by Step Solution

1. Step 1: Write the proportion equation
   22,111.50 : 30,514.14 = 12,680.94 : x
2. Step 2: Convert to fraction form
   22,111.50/30,514.14 = 12,680.94/x
3. Step 3: Cross multiply
   22,111.50x = 30,514.14 × 12,680.94
4. Step 4: Simplify right side
   22,111.50x = 386,947,978.49
5. Step 5: Solve for x
   x = 386,947,978.49/22,111.50
6. Step 6: Final answer
   x = 17,499.85