Finding the Fourth Proportional to 3,636.63, 5,018.75 and 2,145.42

Step by Step Solution

1. Step 1: Write the proportion equation
   3,636.63 : 5,018.75 = 2,145.42 : x
2. Step 2: Convert to fraction form
   3,636.63/5,018.75 = 2,145.42/x
3. Step 3: Cross multiply
   3,636.63x = 5,018.75 × 2,145.42
4. Step 4: Simplify right side
   3,636.63x = 10,767,315.90
5. Step 5: Solve for x
   x = 10,767,315.90/3,636.63
6. Step 6: Final answer
   x = 2,960.79