Finding the Fourth Proportional to 3,976.50, 5,490.45 and 2,930.10

Step by Step Solution

1. Step 1: Write the proportion equation
   3,976.50 : 5,490.45 = 2,930.10 : x
2. Step 2: Convert to fraction form
   3,976.50/5,490.45 = 2,930.10/x
3. Step 3: Cross multiply
   3,976.50x = 5,490.45 × 2,930.10
4. Step 4: Simplify right side
   3,976.50x = 16,087,567.55
5. Step 5: Solve for x
   x = 16,087,567.55/3,976.50
6. Step 6: Final answer
   x = 4,045.66