Finding the Fourth Proportional to 4,490.76, 6,732.78 and 3,100.12

Step by Step Solution

1. Step 1: Write the proportion equation
   4,490.76 : 6,732.78 = 3,100.12 : x
2. Step 2: Convert to fraction form
   4,490.76/6,732.78 = 3,100.12/x
3. Step 3: Cross multiply
   4,490.76x = 6,732.78 × 3,100.12
4. Step 4: Simplify right side
   4,490.76x = 20,872,422.72
5. Step 5: Solve for x
   x = 20,872,422.72/4,490.76
6. Step 6: Final answer
   x = 4,647.86