Finding the Fourth Proportional to 12,932.62, 17,853.82 and 8,705.90

Step by Step Solution

1. Step 1: Write the proportion equation
   12,932.62 : 17,853.82 = 8,705.90 : x
2. Step 2: Convert to fraction form
   12,932.62/17,853.82 = 8,705.90/x
3. Step 3: Cross multiply
   12,932.62x = 17,853.82 × 8,705.90
4. Step 4: Simplify right side
   12,932.62x = 155,433,571.54
5. Step 5: Solve for x
   x = 155,433,571.54/12,932.62
6. Step 6: Final answer
   x = 12,018.72