Finding the Fourth Proportional to 3,937.88, 5,906.78 and 3,697.32

Step by Step Solution

1. Step 1: Write the proportion equation
   3,937.88 : 5,906.78 = 3,697.32 : x
2. Step 2: Convert to fraction form
   3,937.88/5,906.78 = 3,697.32/x
3. Step 3: Cross multiply
   3,937.88x = 5,906.78 × 3,697.32
4. Step 4: Simplify right side
   3,937.88x = 21,839,255.83
5. Step 5: Solve for x
   x = 21,839,255.83/3,937.88
6. Step 6: Final answer
   x = 5,545.94