Finding the Fourth Proportional to 17,178.94, 25,771.48 and 8,856.72

Step by Step Solution

1. Step 1: Write the proportion equation
   17,178.94 : 25,771.48 = 8,856.72 : x
2. Step 2: Convert to fraction form
   17,178.94/25,771.48 = 8,856.72/x
3. Step 3: Cross multiply
   17,178.94x = 25,771.48 × 8,856.72
4. Step 4: Simplify right side
   17,178.94x = 228,250,810.02
5. Step 5: Solve for x
   x = 228,250,810.02/17,178.94
6. Step 6: Final answer
   x = 13,286.67