Finding the Fourth Proportional to 17,289.76, 23,826.72 and 11,974.72

Step by Step Solution

1. Step 1: Write the proportion equation
   17,289.76 : 23,826.72 = 11,974.72 : x
2. Step 2: Convert to fraction form
   17,289.76/23,826.72 = 11,974.72/x
3. Step 3: Cross multiply
   17,289.76x = 23,826.72 × 11,974.72
4. Step 4: Simplify right side
   17,289.76x = 285,318,300.52
5. Step 5: Solve for x
   x = 285,318,300.52/17,289.76
6. Step 6: Final answer
   x = 16,502.16