Finding the Fourth Proportional to 16,897.72, 23,316.78 and 9,825.72

Step by Step Solution

1. Step 1: Write the proportion equation
   16,897.72 : 23,316.78 = 9,825.72 : x
2. Step 2: Convert to fraction form
   16,897.72/23,316.78 = 9,825.72/x
3. Step 3: Cross multiply
   16,897.72x = 23,316.78 × 9,825.72
4. Step 4: Simplify right side
   16,897.72x = 229,104,151.58
5. Step 5: Solve for x
   x = 229,104,151.58/16,897.72
6. Step 6: Final answer
   x = 13,558.29