Finding the Fourth Proportional to 3,956.37, 5,459.83 and 2,188.01

Step by Step Solution

1. Step 1: Write the proportion equation
   3,956.37 : 5,459.83 = 2,188.01 : x
2. Step 2: Convert to fraction form
   3,956.37/5,459.83 = 2,188.01/x
3. Step 3: Cross multiply
   3,956.37x = 5,459.83 × 2,188.01
4. Step 4: Simplify right side
   3,956.37x = 11,946,136.69
5. Step 5: Solve for x
   x = 11,946,136.69/3,956.37
6. Step 6: Final answer
   x = 3,019.47