Finding the Fourth Proportional to 13,939.59, 19,227.89 and 8,270.33

Step by Step Solution

1. Step 1: Write the proportion equation
   13,939.59 : 19,227.89 = 8,270.33 : x
2. Step 2: Convert to fraction form
   13,939.59/19,227.89 = 8,270.33/x
3. Step 3: Cross multiply
   13,939.59x = 19,227.89 × 8,270.33
4. Step 4: Simplify right side
   13,939.59x = 159,020,858.01
5. Step 5: Solve for x
   x = 159,020,858.01/13,939.59
6. Step 6: Final answer
   x = 11,407.86