Finding the Fourth Proportional to 4,911.98, 6,780.85 and 3,144.61

Step by Step Solution

1. Step 1: Write the proportion equation
   4,911.98 : 6,780.85 = 3,144.61 : x
2. Step 2: Convert to fraction form
   4,911.98/6,780.85 = 3,144.61/x
3. Step 3: Cross multiply
   4,911.98x = 6,780.85 × 3,144.61
4. Step 4: Simplify right side
   4,911.98x = 21,323,128.72
5. Step 5: Solve for x
   x = 21,323,128.72/4,911.98
6. Step 6: Final answer
   x = 4,341.05