Finding the Fourth Proportional to 22,340, 30,829.20 and 12,404

Step by Step Solution

1. Step 1: Write the proportion equation
   22,340 : 30,829.20 = 12,404 : x
2. Step 2: Convert to fraction form
   22,340/30,829.20 = 12,404/x
3. Step 3: Cross multiply
   22,340x = 30,829.20 × 12,404
4. Step 4: Simplify right side
   22,340x = 382,405,396.80
5. Step 5: Solve for x
   x = 382,405,396.80/22,340
6. Step 6: Final answer
   x = 17,117.52