Finding the Fourth Proportional to 7,200.05, 9,936.67 and 4,056.84

Step by Step Solution

1. Step 1: Write the proportion equation
   7,200.05 : 9,936.67 = 4,056.84 : x
2. Step 2: Convert to fraction form
   7,200.05/9,936.67 = 4,056.84/x
3. Step 3: Cross multiply
   7,200.05x = 9,936.67 × 4,056.84
4. Step 4: Simplify right side
   7,200.05x = 40,311,480.32
5. Step 5: Solve for x
   x = 40,311,480.32/7,200.05
6. Step 6: Final answer
   x = 5,598.78