Finding the Fourth Proportional to 4,900.25, 6,763.98 and 3,108.96

Step by Step Solution

1. Step 1: Write the proportion equation
   4,900.25 : 6,763.98 = 3,108.96 : x
2. Step 2: Convert to fraction form
   4,900.25/6,763.98 = 3,108.96/x
3. Step 3: Cross multiply
   4,900.25x = 6,763.98 × 3,108.96
4. Step 4: Simplify right side
   4,900.25x = 21,028,927.15
5. Step 5: Solve for x
   x = 21,028,927.15/4,900.25
6. Step 6: Final answer
   x = 4,291.40