Finding the Fourth Proportional to 22,108.34, 30,510.88 and 12,679.94

Step by Step Solution

1. Step 1: Write the proportion equation
   22,108.34 : 30,510.88 = 12,679.94 : x
2. Step 2: Convert to fraction form
   22,108.34/30,510.88 = 12,679.94/x
3. Step 3: Cross multiply
   22,108.34x = 30,510.88 × 12,679.94
4. Step 4: Simplify right side
   22,108.34x = 386,876,127.75
5. Step 5: Solve for x
   x = 386,876,127.75/22,108.34
6. Step 6: Final answer
   x = 17,499.10