Finding the Fourth Proportional to 7,105.56, 9,805.76 and 4,121.52

Step by Step Solution

1. Step 1: Write the proportion equation
   7,105.56 : 9,805.76 = 4,121.52 : x
2. Step 2: Convert to fraction form
   7,105.56/9,805.76 = 4,121.52/x
3. Step 3: Cross multiply
   7,105.56x = 9,805.76 × 4,121.52
4. Step 4: Simplify right side
   7,105.56x = 40,414,635.96
5. Step 5: Solve for x
   x = 40,414,635.96/7,105.56
6. Step 6: Final answer
   x = 5,687.75