Finding the Fourth Proportional to 3,642.67, 5,021.59 and 2,577.12

Step by Step Solution

1. Step 1: Write the proportion equation
   3,642.67 : 5,021.59 = 2,577.12 : x
2. Step 2: Convert to fraction form
   3,642.67/5,021.59 = 2,577.12/x
3. Step 3: Cross multiply
   3,642.67x = 5,021.59 × 2,577.12
4. Step 4: Simplify right side
   3,642.67x = 12,941,240.02
5. Step 5: Solve for x
   x = 12,941,240.02/3,642.67
6. Step 6: Final answer
   x = 3,552.68