Finding the Fourth Proportional to 7,443.56, 11,155.56 and 4,158.20

Step by Step Solution

1. Step 1: Write the proportion equation
   7,443.56 : 11,155.56 = 4,158.20 : x
2. Step 2: Convert to fraction form
   7,443.56/11,155.56 = 4,158.20/x
3. Step 3: Cross multiply
   7,443.56x = 11,155.56 × 4,158.20
4. Step 4: Simplify right side
   7,443.56x = 46,387,049.59
5. Step 5: Solve for x
   x = 46,387,049.59/7,443.56
6. Step 6: Final answer
   x = 6,231.84