Finding the Fourth Proportional to 5,145.50, 7,105.66 and 3,745.82

Step by Step Solution

1. Step 1: Write the proportion equation
   5,145.50 : 7,105.66 = 3,745.82 : x
2. Step 2: Convert to fraction form
   5,145.50/7,105.66 = 3,745.82/x
3. Step 3: Cross multiply
   5,145.50x = 7,105.66 × 3,745.82
4. Step 4: Simplify right side
   5,145.50x = 26,616,523.34
5. Step 5: Solve for x
   x = 26,616,523.34/5,145.50
6. Step 6: Final answer
   x = 5,172.78