Finding the Fourth Proportional to 12,555.24, 18,840.55 and 5,057.42

Step by Step Solution

1. Step 1: Write the proportion equation
   12,555.24 : 18,840.55 = 5,057.42 : x
2. Step 2: Convert to fraction form
   12,555.24/18,840.55 = 5,057.42/x
3. Step 3: Cross multiply
   12,555.24x = 18,840.55 × 5,057.42
4. Step 4: Simplify right side
   12,555.24x = 95,284,574.38
5. Step 5: Solve for x
   x = 95,284,574.38/12,555.24
6. Step 6: Final answer
   x = 7,589.23