Finding the Fourth Proportional to 3,074.72, 4,247.12 and 2,487.47

Step by Step Solution

1. Step 1: Write the proportion equation
   3,074.72 : 4,247.12 = 2,487.47 : x
2. Step 2: Convert to fraction form
   3,074.72/4,247.12 = 2,487.47/x
3. Step 3: Cross multiply
   3,074.72x = 4,247.12 × 2,487.47
4. Step 4: Simplify right side
   3,074.72x = 10,564,571.15
5. Step 5: Solve for x
   x = 10,564,571.15/3,074.72
6. Step 6: Final answer
   x = 3,435.95