Finding the Fourth Proportional to 3,916.41, 5,408.28 and 2,521.59

Step by Step Solution

1. Step 1: Write the proportion equation
   3,916.41 : 5,408.28 = 2,521.59 : x
2. Step 2: Convert to fraction form
   3,916.41/5,408.28 = 2,521.59/x
3. Step 3: Cross multiply
   3,916.41x = 5,408.28 × 2,521.59
4. Step 4: Simplify right side
   3,916.41x = 13,637,464.77
5. Step 5: Solve for x
   x = 13,637,464.77/3,916.41
6. Step 6: Final answer
   x = 3,482.13