Finding the Fourth Proportional to 16,707.69, 23,055.98 and 9,153.72

Step by Step Solution

1. Step 1: Write the proportion equation
   16,707.69 : 23,055.98 = 9,153.72 : x
2. Step 2: Convert to fraction form
   16,707.69/23,055.98 = 9,153.72/x
3. Step 3: Cross multiply
   16,707.69x = 23,055.98 × 9,153.72
4. Step 4: Simplify right side
   16,707.69x = 211,047,939.48
5. Step 5: Solve for x
   x = 211,047,939.48/16,707.69
6. Step 6: Final answer
   x = 12,631.78