Finding the Fourth Proportional to 13,168.52, 18,171.98 and 7,200.28

Step by Step Solution

1. Step 1: Write the proportion equation
   13,168.52 : 18,171.98 = 7,200.28 : x
2. Step 2: Convert to fraction form
   13,168.52/18,171.98 = 7,200.28/x
3. Step 3: Cross multiply
   13,168.52x = 18,171.98 × 7,200.28
4. Step 4: Simplify right side
   13,168.52x = 130,843,253.29
5. Step 5: Solve for x
   x = 130,843,253.29/13,168.52
6. Step 6: Final answer
   x = 9,936.07