Finding the Fourth Proportional to 3,665.39, 5,052.98 and 2,615.63

Step by Step Solution

1. Step 1: Write the proportion equation
   3,665.39 : 5,052.98 = 2,615.63 : x
2. Step 2: Convert to fraction form
   3,665.39/5,052.98 = 2,615.63/x
3. Step 3: Cross multiply
   3,665.39x = 5,052.98 × 2,615.63
4. Step 4: Simplify right side
   3,665.39x = 13,216,707.35
5. Step 5: Solve for x
   x = 13,216,707.35/3,665.39
6. Step 6: Final answer
   x = 3,605.82