Finding the Fourth Proportional to 8,956.08, 12,360.27 and 5,178.05

Step by Step Solution

1. Step 1: Write the proportion equation
   8,956.08 : 12,360.27 = 5,178.05 : x
2. Step 2: Convert to fraction form
   8,956.08/12,360.27 = 5,178.05/x
3. Step 3: Cross multiply
   8,956.08x = 12,360.27 × 5,178.05
4. Step 4: Simplify right side
   8,956.08x = 64,002,034.27
5. Step 5: Solve for x
   x = 64,002,034.27/8,956.08
6. Step 6: Final answer
   x = 7,146.21