Finding the Fourth Proportional to 3,696.79, 5,101.46 and 2,018.21

Step by Step Solution

1. Step 1: Write the proportion equation
   3,696.79 : 5,101.46 = 2,018.21 : x
2. Step 2: Convert to fraction form
   3,696.79/5,101.46 = 2,018.21/x
3. Step 3: Cross multiply
   3,696.79x = 5,101.46 × 2,018.21
4. Step 4: Simplify right side
   3,696.79x = 10,295,817.59
5. Step 5: Solve for x
   x = 10,295,817.59/3,696.79
6. Step 6: Final answer
   x = 2,785.07