Finding the Fourth Proportional to 3,763.91, 5,607.71 and 3,578.02

Step by Step Solution

1. Step 1: Write the proportion equation
   3,763.91 : 5,607.71 = 3,578.02 : x
2. Step 2: Convert to fraction form
   3,763.91/5,607.71 = 3,578.02/x
3. Step 3: Cross multiply
   3,763.91x = 5,607.71 × 3,578.02
4. Step 4: Simplify right side
   3,763.91x = 20,064,498.53
5. Step 5: Solve for x
   x = 20,064,498.53/3,763.91
6. Step 6: Final answer
   x = 5,330.76