Finding the Fourth Proportional to 3,997.97, 5,513.61 and 2,506.05

Step by Step Solution

1. Step 1: Write the proportion equation
   3,997.97 : 5,513.61 = 2,506.05 : x
2. Step 2: Convert to fraction form
   3,997.97/5,513.61 = 2,506.05/x
3. Step 3: Cross multiply
   3,997.97x = 5,513.61 × 2,506.05
4. Step 4: Simplify right side
   3,997.97x = 13,817,382.34
5. Step 5: Solve for x
   x = 13,817,382.34/3,997.97
6. Step 6: Final answer
   x = 3,456.10