Finding the Fourth Proportional to 3,686.22, 5,081.22 and 2,505.24

Step by Step Solution

1. Step 1: Write the proportion equation
   3,686.22 : 5,081.22 = 2,505.24 : x
2. Step 2: Convert to fraction form
   3,686.22/5,081.22 = 2,505.24/x
3. Step 3: Cross multiply
   3,686.22x = 5,081.22 × 2,505.24
4. Step 4: Simplify right side
   3,686.22x = 12,729,675.59
5. Step 5: Solve for x
   x = 12,729,675.59/3,686.22
6. Step 6: Final answer
   x = 3,453.31