Finding the Fourth Proportional to 8,892, 12,271.68 and 5,166.72

Step by Step Solution

1. Step 1: Write the proportion equation
   8,892 : 12,271.68 = 5,166.72 : x
2. Step 2: Convert to fraction form
   8,892/12,271.68 = 5,166.72/x
3. Step 3: Cross multiply
   8,892x = 12,271.68 × 5,166.72
4. Step 4: Simplify right side
   8,892x = 63,404,334.49
5. Step 5: Solve for x
   x = 63,404,334.49/8,892
6. Step 6: Final answer
   x = 7,130.49