Finding the Fourth Proportional to 3,678.56, 5,076.51 and 2,107.16

Step by Step Solution

1. Step 1: Write the proportion equation
   3,678.56 : 5,076.51 = 2,107.16 : x
2. Step 2: Convert to fraction form
   3,678.56/5,076.51 = 2,107.16/x
3. Step 3: Cross multiply
   3,678.56x = 5,076.51 × 2,107.16
4. Step 4: Simplify right side
   3,678.56x = 10,697,018.81
5. Step 5: Solve for x
   x = 10,697,018.81/3,678.56
6. Step 6: Final answer
   x = 2,907.94