Finding the Fourth Proportional to 3,855.30, 5,779.29 and 3,501.74

Step by Step Solution

1. Step 1: Write the proportion equation
   3,855.30 : 5,779.29 = 3,501.74 : x
2. Step 2: Convert to fraction form
   3,855.30/5,779.29 = 3,501.74/x
3. Step 3: Cross multiply
   3,855.30x = 5,779.29 × 3,501.74
4. Step 4: Simplify right side
   3,855.30x = 20,237,542.07
5. Step 5: Solve for x
   x = 20,237,542.07/3,855.30
6. Step 6: Final answer
   x = 5,249.28