Finding the Fourth Proportional to 12,109.34, 18,176.73 and 10,731.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,109.34 : 18,176.73 = 10,731.50 : x
2. Step 2: Convert to fraction form
   12,109.34/18,176.73 = 10,731.50/x
3. Step 3: Cross multiply
   12,109.34x = 18,176.73 × 10,731.50
4. Step 4: Simplify right side
   12,109.34x = 195,063,578.00
5. Step 5: Solve for x
   x = 195,063,578.00/12,109.34
6. Step 6: Final answer
   x = 16,108.52