Finding the Fourth Proportional to 22,043.89, 30,420.57 and 12,612.46

Step by Step Solution

1. Step 1: Write the proportion equation
   22,043.89 : 30,420.57 = 12,612.46 : x
2. Step 2: Convert to fraction form
   22,043.89/30,420.57 = 12,612.46/x
3. Step 3: Cross multiply
   22,043.89x = 30,420.57 × 12,612.46
4. Step 4: Simplify right side
   22,043.89x = 383,678,222.30
5. Step 5: Solve for x
   x = 383,678,222.30/22,043.89
6. Step 6: Final answer
   x = 17,405.20