Finding the Fourth Proportional to 3,333.15, 4,978.26 and 3,020.15

Step by Step Solution

1. Step 1: Write the proportion equation
   3,333.15 : 4,978.26 = 3,020.15 : x
2. Step 2: Convert to fraction form
   3,333.15/4,978.26 = 3,020.15/x
3. Step 3: Cross multiply
   3,333.15x = 4,978.26 × 3,020.15
4. Step 4: Simplify right side
   3,333.15x = 15,035,104.38
5. Step 5: Solve for x
   x = 15,035,104.38/3,333.15
6. Step 6: Final answer
   x = 4,510.78