Finding the Fourth Proportional to 13,133.36, 18,141.72 and 12,200.24

Step by Step Solution

1. Step 1: Write the proportion equation
   13,133.36 : 18,141.72 = 12,200.24 : x
2. Step 2: Convert to fraction form
   13,133.36/18,141.72 = 12,200.24/x
3. Step 3: Cross multiply
   13,133.36x = 18,141.72 × 12,200.24
4. Step 4: Simplify right side
   13,133.36x = 221,333,338.01
5. Step 5: Solve for x
   x = 221,333,338.01/13,133.36
6. Step 6: Final answer
   x = 16,852.76