Finding the Fourth Proportional to 16,897.48, 23,316.49 and 9,342.79

Step by Step Solution

1. Step 1: Write the proportion equation
   16,897.48 : 23,316.49 = 9,342.79 : x
2. Step 2: Convert to fraction form
   16,897.48/23,316.49 = 9,342.79/x
3. Step 3: Cross multiply
   16,897.48x = 23,316.49 × 9,342.79
4. Step 4: Simplify right side
   16,897.48x = 217,841,022.89
5. Step 5: Solve for x
   x = 217,841,022.89/16,897.48
6. Step 6: Final answer
   x = 12,891.92