Finding the Fourth Proportional to 2,647.64, 3,660.24 and 2,622.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,647.64 : 3,660.24 = 2,622.72 : x
2. Step 2: Convert to fraction form
   2,647.64/3,660.24 = 2,622.72/x
3. Step 3: Cross multiply
   2,647.64x = 3,660.24 × 2,622.72
4. Step 4: Simplify right side
   2,647.64x = 9,599,784.65
5. Step 5: Solve for x
   x = 9,599,784.65/2,647.64
6. Step 6: Final answer
   x = 3,625.79