Finding the Fourth Proportional to 2,599.72, 3,903.90 and 2,579.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,599.72 : 3,903.90 = 2,579.56 : x
2. Step 2: Convert to fraction form
   2,599.72/3,903.90 = 2,579.56/x
3. Step 3: Cross multiply
   2,599.72x = 3,903.90 × 2,579.56
4. Step 4: Simplify right side
   2,599.72x = 10,070,344.28
5. Step 5: Solve for x
   x = 10,070,344.28/2,599.72
6. Step 6: Final answer
   x = 3,873.63