Finding the Fourth Proportional to 3,648.72, 5,035.73 and 2,157.51

Step by Step Solution

1. Step 1: Write the proportion equation
   3,648.72 : 5,035.73 = 2,157.51 : x
2. Step 2: Convert to fraction form
   3,648.72/5,035.73 = 2,157.51/x
3. Step 3: Cross multiply
   3,648.72x = 5,035.73 × 2,157.51
4. Step 4: Simplify right side
   3,648.72x = 10,864,627.04
5. Step 5: Solve for x
   x = 10,864,627.04/3,648.72
6. Step 6: Final answer
   x = 2,977.65