Finding the Fourth Proportional to 16,636.14, 22,953.42 and 9,918.72

Step by Step Solution

1. Step 1: Write the proportion equation
   16,636.14 : 22,953.42 = 9,918.72 : x
2. Step 2: Convert to fraction form
   16,636.14/22,953.42 = 9,918.72/x
3. Step 3: Cross multiply
   16,636.14x = 22,953.42 × 9,918.72
4. Step 4: Simplify right side
   16,636.14x = 227,668,546.02
5. Step 5: Solve for x
   x = 227,668,546.02/16,636.14
6. Step 6: Final answer
   x = 13,685.18