Finding the Fourth Proportional to 22,405.95, 30,920.22 and 12,334.78

Step by Step Solution

1. Step 1: Write the proportion equation
   22,405.95 : 30,920.22 = 12,334.78 : x
2. Step 2: Convert to fraction form
   22,405.95/30,920.22 = 12,334.78/x
3. Step 3: Cross multiply
   22,405.95x = 30,920.22 × 12,334.78
4. Step 4: Simplify right side
   22,405.95x = 381,393,894.98
5. Step 5: Solve for x
   x = 381,393,894.98/22,405.95
6. Step 6: Final answer
   x = 17,022.00