Finding the Fourth Proportional to 12,884.57, 17,789.27 and 9,895.06

Step by Step Solution

1. Step 1: Write the proportion equation
   12,884.57 : 17,789.27 = 9,895.06 : x
2. Step 2: Convert to fraction form
   12,884.57/17,789.27 = 9,895.06/x
3. Step 3: Cross multiply
   12,884.57x = 17,789.27 × 9,895.06
4. Step 4: Simplify right side
   12,884.57x = 176,025,922.43
5. Step 5: Solve for x
   x = 176,025,922.43/12,884.57
6. Step 6: Final answer
   x = 13,661.76