Finding the Fourth Proportional to 7,200.72, 9,933.60 and 4,214.72

Step by Step Solution

1. Step 1: Write the proportion equation
   7,200.72 : 9,933.60 = 4,214.72 : x
2. Step 2: Convert to fraction form
   7,200.72/9,933.60 = 4,214.72/x
3. Step 3: Cross multiply
   7,200.72x = 9,933.60 × 4,214.72
4. Step 4: Simplify right side
   7,200.72x = 41,867,342.59
5. Step 5: Solve for x
   x = 41,867,342.59/7,200.72
6. Step 6: Final answer
   x = 5,814.33