Finding the Fourth Proportional to 3,993.78, 5,511.36 and 2,225.38

Step by Step Solution

1. Step 1: Write the proportion equation
   3,993.78 : 5,511.36 = 2,225.38 : x
2. Step 2: Convert to fraction form
   3,993.78/5,511.36 = 2,225.38/x
3. Step 3: Cross multiply
   3,993.78x = 5,511.36 × 2,225.38
4. Step 4: Simplify right side
   3,993.78x = 12,264,870.32
5. Step 5: Solve for x
   x = 12,264,870.32/3,993.78
6. Step 6: Final answer
   x = 3,070.99