Finding the Fourth Proportional to 9,005.48, 12,426.72 and 5,227.64

Step by Step Solution

1. Step 1: Write the proportion equation
   9,005.48 : 12,426.72 = 5,227.64 : x
2. Step 2: Convert to fraction form
   9,005.48/12,426.72 = 5,227.64/x
3. Step 3: Cross multiply
   9,005.48x = 12,426.72 × 5,227.64
4. Step 4: Simplify right side
   9,005.48x = 64,962,418.54
5. Step 5: Solve for x
   x = 64,962,418.54/9,005.48
6. Step 6: Final answer
   x = 7,213.65