Finding the Fourth Proportional to 3,678.36, 5,076.01 and 2,106.15

Step by Step Solution

1. Step 1: Write the proportion equation
   3,678.36 : 5,076.01 = 2,106.15 : x
2. Step 2: Convert to fraction form
   3,678.36/5,076.01 = 2,106.15/x
3. Step 3: Cross multiply
   3,678.36x = 5,076.01 × 2,106.15
4. Step 4: Simplify right side
   3,678.36x = 10,690,802.55
5. Step 5: Solve for x
   x = 10,690,802.55/3,678.36
6. Step 6: Final answer
   x = 2,906.41