Finding the Fourth Proportional to 3,963.93, 5,913.62 and 3,642.49

Step by Step Solution

1. Step 1: Write the proportion equation
   3,963.93 : 5,913.62 = 3,642.49 : x
2. Step 2: Convert to fraction form
   3,963.93/5,913.62 = 3,642.49/x
3. Step 3: Cross multiply
   3,963.93x = 5,913.62 × 3,642.49
4. Step 4: Simplify right side
   3,963.93x = 21,540,268.72
5. Step 5: Solve for x
   x = 21,540,268.72/3,963.93
6. Step 6: Final answer
   x = 5,434.07