Finding the Fourth Proportional to 16,943.82, 23,381.80 and 9,390.47

Step by Step Solution

1. Step 1: Write the proportion equation
   16,943.82 : 23,381.80 = 9,390.47 : x
2. Step 2: Convert to fraction form
   16,943.82/23,381.80 = 9,390.47/x
3. Step 3: Cross multiply
   16,943.82x = 23,381.80 × 9,390.47
4. Step 4: Simplify right side
   16,943.82x = 219,566,091.45
5. Step 5: Solve for x
   x = 219,566,091.45/16,943.82
6. Step 6: Final answer
   x = 12,958.48