Finding the Fourth Proportional to 3,864.78, 5,764.66 and 3,510.02

Step by Step Solution

1. Step 1: Write the proportion equation
   3,864.78 : 5,764.66 = 3,510.02 : x
2. Step 2: Convert to fraction form
   3,864.78/5,764.66 = 3,510.02/x
3. Step 3: Cross multiply
   3,864.78x = 5,764.66 × 3,510.02
4. Step 4: Simplify right side
   3,864.78x = 20,234,071.89
5. Step 5: Solve for x
   x = 20,234,071.89/3,864.78
6. Step 6: Final answer
   x = 5,235.50