Finding the Fourth Proportional to 3,109.25, 4,669.86 and 2,665.53

Step by Step Solution

1. Step 1: Write the proportion equation
   3,109.25 : 4,669.86 = 2,665.53 : x
2. Step 2: Convert to fraction form
   3,109.25/4,669.86 = 2,665.53/x
3. Step 3: Cross multiply
   3,109.25x = 4,669.86 × 2,665.53
4. Step 4: Simplify right side
   3,109.25x = 12,447,651.93
5. Step 5: Solve for x
   x = 12,447,651.93/3,109.25
6. Step 6: Final answer
   x = 4,003.42