Finding the Fourth Proportional to 3,964.89, 5,977.76 and 3,697.22

Step by Step Solution

1. Step 1: Write the proportion equation
   3,964.89 : 5,977.76 = 3,697.22 : x
2. Step 2: Convert to fraction form
   3,964.89/5,977.76 = 3,697.22/x
3. Step 3: Cross multiply
   3,964.89x = 5,977.76 × 3,697.22
4. Step 4: Simplify right side
   3,964.89x = 22,101,045.45
5. Step 5: Solve for x
   x = 22,101,045.45/3,964.89
6. Step 6: Final answer
   x = 5,574.19