Finding the Fourth Proportional to 3,678.64, 5,076.59 and 2,106.73

Step by Step Solution

1. Step 1: Write the proportion equation
   3,678.64 : 5,076.59 = 2,106.73 : x
2. Step 2: Convert to fraction form
   3,678.64/5,076.59 = 2,106.73/x
3. Step 3: Cross multiply
   3,678.64x = 5,076.59 × 2,106.73
4. Step 4: Simplify right side
   3,678.64x = 10,694,968.53
5. Step 5: Solve for x
   x = 10,694,968.53/3,678.64
6. Step 6: Final answer
   x = 2,907.32