Finding the Fourth Proportional to 3,929.10, 5,860.55 and 3,656.94

Step by Step Solution

1. Step 1: Write the proportion equation
   3,929.10 : 5,860.55 = 3,656.94 : x
2. Step 2: Convert to fraction form
   3,929.10/5,860.55 = 3,656.94/x
3. Step 3: Cross multiply
   3,929.10x = 5,860.55 × 3,656.94
4. Step 4: Simplify right side
   3,929.10x = 21,431,661.43
5. Step 5: Solve for x
   x = 21,431,661.43/3,929.10
6. Step 6: Final answer
   x = 5,454.60