Finding the Fourth Proportional to 3,810.99, 5,227.69 and 3,776.43

Step by Step Solution

1. Step 1: Write the proportion equation
   3,810.99 : 5,227.69 = 3,776.43 : x
2. Step 2: Convert to fraction form
   3,810.99/5,227.69 = 3,776.43/x
3. Step 3: Cross multiply
   3,810.99x = 5,227.69 × 3,776.43
4. Step 4: Simplify right side
   3,810.99x = 19,741,995.91
5. Step 5: Solve for x
   x = 19,741,995.91/3,810.99
6. Step 6: Final answer
   x = 5,180.28