Finding the Fourth Proportional to 2,636.02, 3,640.58 and 2,473.21

Step by Step Solution

1. Step 1: Write the proportion equation
   2,636.02 : 3,640.58 = 2,473.21 : x
2. Step 2: Convert to fraction form
   2,636.02/3,640.58 = 2,473.21/x
3. Step 3: Cross multiply
   2,636.02x = 3,640.58 × 2,473.21
4. Step 4: Simplify right side
   2,636.02x = 9,003,918.86
5. Step 5: Solve for x
   x = 9,003,918.86/2,636.02
6. Step 6: Final answer
   x = 3,415.72