Finding the Fourth Proportional to 8,907.72, 12,271.25 and 7,491.44

Step by Step Solution

1. Step 1: Write the proportion equation
   8,907.72 : 12,271.25 = 7,491.44 : x
2. Step 2: Convert to fraction form
   8,907.72/12,271.25 = 7,491.44/x
3. Step 3: Cross multiply
   8,907.72x = 12,271.25 × 7,491.44
4. Step 4: Simplify right side
   8,907.72x = 91,929,271.34
5. Step 5: Solve for x
   x = 91,929,271.34/8,907.72
6. Step 6: Final answer
   x = 10,320.18