Finding the Fourth Proportional to 3,697.31, 5,104.15 and 2,651.20

Step by Step Solution

1. Step 1: Write the proportion equation
   3,697.31 : 5,104.15 = 2,651.20 : x
2. Step 2: Convert to fraction form
   3,697.31/5,104.15 = 2,651.20/x
3. Step 3: Cross multiply
   3,697.31x = 5,104.15 × 2,651.20
4. Step 4: Simplify right side
   3,697.31x = 13,532,103.09
5. Step 5: Solve for x
   x = 13,532,103.09/3,697.31
6. Step 6: Final answer
   x = 3,659.98