Finding the Fourth Proportional to 5,513.78, 8,271.99 and 1,618.10

Step by Step Solution

1. Step 1: Write the proportion equation
   5,513.78 : 8,271.99 = 1,618.10 : x
2. Step 2: Convert to fraction form
   5,513.78/8,271.99 = 1,618.10/x
3. Step 3: Cross multiply
   5,513.78x = 8,271.99 × 1,618.10
4. Step 4: Simplify right side
   5,513.78x = 13,384,907.02
5. Step 5: Solve for x
   x = 13,384,907.02/5,513.78
6. Step 6: Final answer
   x = 2,427.54