Finding the Fourth Proportional to 13,475.56, 18,591.78 and 8,168.68

Step by Step Solution

1. Step 1: Write the proportion equation
   13,475.56 : 18,591.78 = 8,168.68 : x
2. Step 2: Convert to fraction form
   13,475.56/18,591.78 = 8,168.68/x
3. Step 3: Cross multiply
   13,475.56x = 18,591.78 × 8,168.68
4. Step 4: Simplify right side
   13,475.56x = 151,870,301.45
5. Step 5: Solve for x
   x = 151,870,301.45/13,475.56
6. Step 6: Final answer
   x = 11,270.05