Finding the Fourth Proportional to 16,812.86, 23,201.47 and 9,259.89

Step by Step Solution

1. Step 1: Write the proportion equation
   16,812.86 : 23,201.47 = 9,259.89 : x
2. Step 2: Convert to fraction form
   16,812.86/23,201.47 = 9,259.89/x
3. Step 3: Cross multiply
   16,812.86x = 23,201.47 × 9,259.89
4. Step 4: Simplify right side
   16,812.86x = 214,843,060.04
5. Step 5: Solve for x
   x = 214,843,060.04/16,812.86
6. Step 6: Final answer
   x = 12,778.50