Finding the Fourth Proportional to 5,104.72, 7,650.93 and 2,638.21

Step by Step Solution

1. Step 1: Write the proportion equation
   5,104.72 : 7,650.93 = 2,638.21 : x
2. Step 2: Convert to fraction form
   5,104.72/7,650.93 = 2,638.21/x
3. Step 3: Cross multiply
   5,104.72x = 7,650.93 × 2,638.21
4. Step 4: Simplify right side
   5,104.72x = 20,184,760.04
5. Step 5: Solve for x
   x = 20,184,760.04/5,104.72
6. Step 6: Final answer
   x = 3,954.14