Finding the Fourth Proportional to 16,894.17, 23,313.55 and 9,340.31

Step by Step Solution

1. Step 1: Write the proportion equation
   16,894.17 : 23,313.55 = 9,340.31 : x
2. Step 2: Convert to fraction form
   16,894.17/23,313.55 = 9,340.31/x
3. Step 3: Cross multiply
   16,894.17x = 23,313.55 × 9,340.31
4. Step 4: Simplify right side
   16,894.17x = 217,755,666.10
5. Step 5: Solve for x
   x = 217,755,666.10/16,894.17
6. Step 6: Final answer
   x = 12,889.40