Finding the Fourth Proportional to 16,680.72, 23,020.26 and 9,510.86

Step by Step Solution

1. Step 1: Write the proportion equation
   16,680.72 : 23,020.26 = 9,510.86 : x
2. Step 2: Convert to fraction form
   16,680.72/23,020.26 = 9,510.86/x
3. Step 3: Cross multiply
   16,680.72x = 23,020.26 × 9,510.86
4. Step 4: Simplify right side
   16,680.72x = 218,942,470.02
5. Step 5: Solve for x
   x = 218,942,470.02/16,680.72
6. Step 6: Final answer
   x = 13,125.48