Finding the Fourth Proportional to 2,599.05, 3,893.55 and 2,013.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,599.05 : 3,893.55 = 2,013.72 : x
2. Step 2: Convert to fraction form
   2,599.05/3,893.55 = 2,013.72/x
3. Step 3: Cross multiply
   2,599.05x = 3,893.55 × 2,013.72
4. Step 4: Simplify right side
   2,599.05x = 7,840,519.51
5. Step 5: Solve for x
   x = 7,840,519.51/2,599.05
6. Step 6: Final answer
   x = 3,016.69