Finding the Fourth Proportional to 16,864.86, 23,272.30 and 9,309.98

Step by Step Solution

1. Step 1: Write the proportion equation
   16,864.86 : 23,272.30 = 9,309.98 : x
2. Step 2: Convert to fraction form
   16,864.86/23,272.30 = 9,309.98/x
3. Step 3: Cross multiply
   16,864.86x = 23,272.30 × 9,309.98
4. Step 4: Simplify right side
   16,864.86x = 216,664,647.55
5. Step 5: Solve for x
   x = 216,664,647.55/16,864.86
6. Step 6: Final answer
   x = 12,847.11