Finding the Fourth Proportional to 3,878.81, 5,791.86 and 3,773.71

Step by Step Solution

1. Step 1: Write the proportion equation
   3,878.81 : 5,791.86 = 3,773.71 : x
2. Step 2: Convert to fraction form
   3,878.81/5,791.86 = 3,773.71/x
3. Step 3: Cross multiply
   3,878.81x = 5,791.86 × 3,773.71
4. Step 4: Simplify right side
   3,878.81x = 21,856,785.52
5. Step 5: Solve for x
   x = 21,856,785.52/3,878.81
6. Step 6: Final answer
   x = 5,634.93