Finding the Fourth Proportional to 3,687.72, 5,535.05 and 2,455.98

Step by Step Solution

1. Step 1: Write the proportion equation
   3,687.72 : 5,535.05 = 2,455.98 : x
2. Step 2: Convert to fraction form
   3,687.72/5,535.05 = 2,455.98/x
3. Step 3: Cross multiply
   3,687.72x = 5,535.05 × 2,455.98
4. Step 4: Simplify right side
   3,687.72x = 13,593,959.82
5. Step 5: Solve for x
   x = 13,593,959.82/3,687.72
6. Step 6: Final answer
   x = 3,686.28