Finding the Fourth Proportional to 12,259.76, 16,865.39 and 10,740.49

Step by Step Solution

1. Step 1: Write the proportion equation
   12,259.76 : 16,865.39 = 10,740.49 : x
2. Step 2: Convert to fraction form
   12,259.76/16,865.39 = 10,740.49/x
3. Step 3: Cross multiply
   12,259.76x = 16,865.39 × 10,740.49
4. Step 4: Simplify right side
   12,259.76x = 181,142,456.78
5. Step 5: Solve for x
   x = 181,142,456.78/12,259.76
6. Step 6: Final answer
   x = 14,775.36