Finding the Fourth Proportional to 22,179.70, 30,607.20 and 13,225.12

Step by Step Solution

1. Step 1: Write the proportion equation
   22,179.70 : 30,607.20 = 13,225.12 : x
2. Step 2: Convert to fraction form
   22,179.70/30,607.20 = 13,225.12/x
3. Step 3: Cross multiply
   22,179.70x = 30,607.20 × 13,225.12
4. Step 4: Simplify right side
   22,179.70x = 404,783,892.86
5. Step 5: Solve for x
   x = 404,783,892.86/22,179.70
6. Step 6: Final answer
   x = 18,250.20