Finding the Fourth Proportional to 12,446.52, 17,166.06 and 9,305.40

Step by Step Solution

1. Step 1: Write the proportion equation
   12,446.52 : 17,166.06 = 9,305.40 : x
2. Step 2: Convert to fraction form
   12,446.52/17,166.06 = 9,305.40/x
3. Step 3: Cross multiply
   12,446.52x = 17,166.06 × 9,305.40
4. Step 4: Simplify right side
   12,446.52x = 159,737,054.72
5. Step 5: Solve for x
   x = 159,737,054.72/12,446.52
6. Step 6: Final answer
   x = 12,833.87