Finding the Fourth Proportional to 22,407.12, 30,920.62 and 12,333.60

Step by Step Solution

1. Step 1: Write the proportion equation
   22,407.12 : 30,920.62 = 12,333.60 : x
2. Step 2: Convert to fraction form
   22,407.12/30,920.62 = 12,333.60/x
3. Step 3: Cross multiply
   22,407.12x = 30,920.62 × 12,333.60
4. Step 4: Simplify right side
   22,407.12x = 381,362,558.83
5. Step 5: Solve for x
   x = 381,362,558.83/22,407.12
6. Step 6: Final answer
   x = 17,019.70