Finding the Fourth Proportional to 16,936.30, 25,420.04 and 8,622.25

Step by Step Solution

1. Step 1: Write the proportion equation
   16,936.30 : 25,420.04 = 8,622.25 : x
2. Step 2: Convert to fraction form
   16,936.30/25,420.04 = 8,622.25/x
3. Step 3: Cross multiply
   16,936.30x = 25,420.04 × 8,622.25
4. Step 4: Simplify right side
   16,936.30x = 219,177,939.89
5. Step 5: Solve for x
   x = 219,177,939.89/16,936.30
6. Step 6: Final answer
   x = 12,941.31