Finding the Fourth Proportional to 9,003.12, 12,426.96 and 5,227.20

Step by Step Solution

1. Step 1: Write the proportion equation
   9,003.12 : 12,426.96 = 5,227.20 : x
2. Step 2: Convert to fraction form
   9,003.12/12,426.96 = 5,227.20/x
3. Step 3: Cross multiply
   9,003.12x = 12,426.96 × 5,227.20
4. Step 4: Simplify right side
   9,003.12x = 64,958,205.31
5. Step 5: Solve for x
   x = 64,958,205.31/9,003.12
6. Step 6: Final answer
   x = 7,215.08