Finding the Fourth Proportional to 3,402.88, 5,099.73 and 2,578.57

Step by Step Solution

1. Step 1: Write the proportion equation
   3,402.88 : 5,099.73 = 2,578.57 : x
2. Step 2: Convert to fraction form
   3,402.88/5,099.73 = 2,578.57/x
3. Step 3: Cross multiply
   3,402.88x = 5,099.73 × 2,578.57
4. Step 4: Simplify right side
   3,402.88x = 13,150,010.79
5. Step 5: Solve for x
   x = 13,150,010.79/3,402.88
6. Step 6: Final answer
   x = 3,864.38