Finding the Fourth Proportional to 12,176.56, 18,264.72 and 3,856.55

Step by Step Solution

1. Step 1: Write the proportion equation
   12,176.56 : 18,264.72 = 3,856.55 : x
2. Step 2: Convert to fraction form
   12,176.56/18,264.72 = 3,856.55/x
3. Step 3: Cross multiply
   12,176.56x = 18,264.72 × 3,856.55
4. Step 4: Simplify right side
   12,176.56x = 70,438,805.92
5. Step 5: Solve for x
   x = 70,438,805.92/12,176.56
6. Step 6: Final answer
   x = 5,784.79