Finding the Fourth Proportional to 9,201.72, 12,697.89 and 5,224.12

Step by Step Solution

1. Step 1: Write the proportion equation
   9,201.72 : 12,697.89 = 5,224.12 : x
2. Step 2: Convert to fraction form
   9,201.72/12,697.89 = 5,224.12/x
3. Step 3: Cross multiply
   9,201.72x = 12,697.89 × 5,224.12
4. Step 4: Simplify right side
   9,201.72x = 66,335,301.11
5. Step 5: Solve for x
   x = 66,335,301.11/9,201.72
6. Step 6: Final answer
   x = 7,209.01