Finding the Fourth Proportional to 5,513.72, 8,269.61 and 1,617.21

Step by Step Solution

1. Step 1: Write the proportion equation
   5,513.72 : 8,269.61 = 1,617.21 : x
2. Step 2: Convert to fraction form
   5,513.72/8,269.61 = 1,617.21/x
3. Step 3: Cross multiply
   5,513.72x = 8,269.61 × 1,617.21
4. Step 4: Simplify right side
   5,513.72x = 13,373,687.90
5. Step 5: Solve for x
   x = 13,373,687.90/5,513.72
6. Step 6: Final answer
   x = 2,425.53