Finding the Fourth Proportional to 7,451.56, 11,162.58 and 5,105.80

Step by Step Solution

1. Step 1: Write the proportion equation
   7,451.56 : 11,162.58 = 5,105.80 : x
2. Step 2: Convert to fraction form
   7,451.56/11,162.58 = 5,105.80/x
3. Step 3: Cross multiply
   7,451.56x = 11,162.58 × 5,105.80
4. Step 4: Simplify right side
   7,451.56x = 56,993,900.96
5. Step 5: Solve for x
   x = 56,993,900.96/7,451.56
6. Step 6: Final answer
   x = 7,648.59