Finding the Fourth Proportional to 13,168.56, 18,172.62 and 7,200.27

Step by Step Solution

1. Step 1: Write the proportion equation
   13,168.56 : 18,172.62 = 7,200.27 : x
2. Step 2: Convert to fraction form
   13,168.56/18,172.62 = 7,200.27/x
3. Step 3: Cross multiply
   13,168.56x = 18,172.62 × 7,200.27
4. Step 4: Simplify right side
   13,168.56x = 130,847,770.61
5. Step 5: Solve for x
   x = 130,847,770.61/13,168.56
6. Step 6: Final answer
   x = 9,936.38