Finding the Fourth Proportional to 3,776.90, 5,687.98 and 3,440.22

Step by Step Solution

1. Step 1: Write the proportion equation
   3,776.90 : 5,687.98 = 3,440.22 : x
2. Step 2: Convert to fraction form
   3,776.90/5,687.98 = 3,440.22/x
3. Step 3: Cross multiply
   3,776.90x = 5,687.98 × 3,440.22
4. Step 4: Simplify right side
   3,776.90x = 19,567,902.56
5. Step 5: Solve for x
   x = 19,567,902.56/3,776.90
6. Step 6: Final answer
   x = 5,180.94