Finding the Fourth Proportional to 12,108.23, 18,109.23 and 10,783.37

Step by Step Solution

1. Step 1: Write the proportion equation
   12,108.23 : 18,109.23 = 10,783.37 : x
2. Step 2: Convert to fraction form
   12,108.23/18,109.23 = 10,783.37/x
3. Step 3: Cross multiply
   12,108.23x = 18,109.23 × 10,783.37
4. Step 4: Simplify right side
   12,108.23x = 195,278,430.48
5. Step 5: Solve for x
   x = 195,278,430.48/12,108.23
6. Step 6: Final answer
   x = 16,127.75