Finding the Fourth Proportional to 16,251.30, 22,427.73 and 9,180.18

Step by Step Solution

1. Step 1: Write the proportion equation
   16,251.30 : 22,427.73 = 9,180.18 : x
2. Step 2: Convert to fraction form
   16,251.30/22,427.73 = 9,180.18/x
3. Step 3: Cross multiply
   16,251.30x = 22,427.73 × 9,180.18
4. Step 4: Simplify right side
   16,251.30x = 205,890,598.39
5. Step 5: Solve for x
   x = 205,890,598.39/16,251.30
6. Step 6: Final answer
   x = 12,669.18