Finding the Fourth Proportional to 12,443.67, 17,189.06 and 9,943.32

Step by Step Solution

1. Step 1: Write the proportion equation
   12,443.67 : 17,189.06 = 9,943.32 : x
2. Step 2: Convert to fraction form
   12,443.67/17,189.06 = 9,943.32/x
3. Step 3: Cross multiply
   12,443.67x = 17,189.06 × 9,943.32
4. Step 4: Simplify right side
   12,443.67x = 170,916,348.94
5. Step 5: Solve for x
   x = 170,916,348.94/12,443.67
6. Step 6: Final answer
   x = 13,735.20