Finding the Fourth Proportional to 3,989.75, 6,014.72 and 3,722.25

Step by Step Solution

1. Step 1: Write the proportion equation
   3,989.75 : 6,014.72 = 3,722.25 : x
2. Step 2: Convert to fraction form
   3,989.75/6,014.72 = 3,722.25/x
3. Step 3: Cross multiply
   3,989.75x = 6,014.72 × 3,722.25
4. Step 4: Simplify right side
   3,989.75x = 22,388,264.31
5. Step 5: Solve for x
   x = 22,388,264.31/3,989.75
6. Step 6: Final answer
   x = 5,611.45