Finding the Fourth Proportional to 7,372.16, 10,171.52 and 4,227.20

Step by Step Solution

1. Step 1: Write the proportion equation
   7,372.16 : 10,171.52 = 4,227.20 : x
2. Step 2: Convert to fraction form
   7,372.16/10,171.52 = 4,227.20/x
3. Step 3: Cross multiply
   7,372.16x = 10,171.52 × 4,227.20
4. Step 4: Simplify right side
   7,372.16x = 42,997,049.34
5. Step 5: Solve for x
   x = 42,997,049.34/7,372.16
6. Step 6: Final answer
   x = 5,832.35