Finding the Fourth Proportional to 12,855.56, 17,740.74 and 7,481.18

Step by Step Solution

1. Step 1: Write the proportion equation
   12,855.56 : 17,740.74 = 7,481.18 : x
2. Step 2: Convert to fraction form
   12,855.56/17,740.74 = 7,481.18/x
3. Step 3: Cross multiply
   12,855.56x = 17,740.74 × 7,481.18
4. Step 4: Simplify right side
   12,855.56x = 132,721,669.27
5. Step 5: Solve for x
   x = 132,721,669.27/12,855.56
6. Step 6: Final answer
   x = 10,324.07