Finding the Fourth Proportional to 16,843.37, 23,242.77 and 9,289.31

Step by Step Solution

1. Step 1: Write the proportion equation
   16,843.37 : 23,242.77 = 9,289.31 : x
2. Step 2: Convert to fraction form
   16,843.37/23,242.77 = 9,289.31/x
3. Step 3: Cross multiply
   16,843.37x = 23,242.77 × 9,289.31
4. Step 4: Simplify right side
   16,843.37x = 215,909,179.57
5. Step 5: Solve for x
   x = 215,909,179.57/16,843.37
6. Step 6: Final answer
   x = 12,818.65