Finding the Fourth Proportional to 16,943.69, 23,382.35 and 9,390.15

Step by Step Solution

1. Step 1: Write the proportion equation
   16,943.69 : 23,382.35 = 9,390.15 : x
2. Step 2: Convert to fraction form
   16,943.69/23,382.35 = 9,390.15/x
3. Step 3: Cross multiply
   16,943.69x = 23,382.35 × 9,390.15
4. Step 4: Simplify right side
   16,943.69x = 219,563,773.85
5. Step 5: Solve for x
   x = 219,563,773.85/16,943.69
6. Step 6: Final answer
   x = 12,958.44