Finding the Fourth Proportional to 16,985.90, 23,440.39 and 9,432.05

Step by Step Solution

1. Step 1: Write the proportion equation
   16,985.90 : 23,440.39 = 9,432.05 : x
2. Step 2: Convert to fraction form
   16,985.90/23,440.39 = 9,432.05/x
3. Step 3: Cross multiply
   16,985.90x = 23,440.39 × 9,432.05
4. Step 4: Simplify right side
   16,985.90x = 221,090,789.72
5. Step 5: Solve for x
   x = 221,090,789.72/16,985.90
6. Step 6: Final answer
   x = 13,016.13