Finding the Fourth Proportional to 8,892.37, 12,263.28 and 8,185.78

Step by Step Solution

1. Step 1: Write the proportion equation
   8,892.37 : 12,263.28 = 8,185.78 : x
2. Step 2: Convert to fraction form
   8,892.37/12,263.28 = 8,185.78/x
3. Step 3: Cross multiply
   8,892.37x = 12,263.28 × 8,185.78
4. Step 4: Simplify right side
   8,892.37x = 100,384,512.16
5. Step 5: Solve for x
   x = 100,384,512.16/8,892.37
6. Step 6: Final answer
   x = 11,288.84