Finding the Fourth Proportional to 12,945.30, 17,851.23 and 9,167.46

Step by Step Solution

1. Step 1: Write the proportion equation
   12,945.30 : 17,851.23 = 9,167.46 : x
2. Step 2: Convert to fraction form
   12,945.30/17,851.23 = 9,167.46/x
3. Step 3: Cross multiply
   12,945.30x = 17,851.23 × 9,167.46
4. Step 4: Simplify right side
   12,945.30x = 163,650,436.98
5. Step 5: Solve for x
   x = 163,650,436.98/12,945.30
6. Step 6: Final answer
   x = 12,641.69