Finding the Fourth Proportional to 17,286.30, 23,855.40 and 10,212.72

Step by Step Solution

1. Step 1: Write the proportion equation
   17,286.30 : 23,855.40 = 10,212.72 : x
2. Step 2: Convert to fraction form
   17,286.30/23,855.40 = 10,212.72/x
3. Step 3: Cross multiply
   17,286.30x = 23,855.40 × 10,212.72
4. Step 4: Simplify right side
   17,286.30x = 243,628,520.69
5. Step 5: Solve for x
   x = 243,628,520.69/17,286.30
6. Step 6: Final answer
   x = 14,093.73