Finding the Fourth Proportional to 2,572.72, 3,859.26 and 1,996.24

Step by Step Solution

1. Step 1: Write the proportion equation
   2,572.72 : 3,859.26 = 1,996.24 : x
2. Step 2: Convert to fraction form
   2,572.72/3,859.26 = 1,996.24/x
3. Step 3: Cross multiply
   2,572.72x = 3,859.26 × 1,996.24
4. Step 4: Simplify right side
   2,572.72x = 7,704,009.18
5. Step 5: Solve for x
   x = 7,704,009.18/2,572.72
6. Step 6: Final answer
   x = 2,994.50