Finding the Fourth Proportional to 4,900.54, 6,757.86 and 3,131.50

Step by Step Solution

1. Step 1: Write the proportion equation
   4,900.54 : 6,757.86 = 3,131.50 : x
2. Step 2: Convert to fraction form
   4,900.54/6,757.86 = 3,131.50/x
3. Step 3: Cross multiply
   4,900.54x = 6,757.86 × 3,131.50
4. Step 4: Simplify right side
   4,900.54x = 21,162,238.59
5. Step 5: Solve for x
   x = 21,162,238.59/4,900.54
6. Step 6: Final answer
   x = 4,318.35