Finding the Fourth Proportional to 13,940.03, 19,228.79 and 8,271.05

Step by Step Solution

1. Step 1: Write the proportion equation
   13,940.03 : 19,228.79 = 8,271.05 : x
2. Step 2: Convert to fraction form
   13,940.03/19,228.79 = 8,271.05/x
3. Step 3: Cross multiply
   13,940.03x = 19,228.79 × 8,271.05
4. Step 4: Simplify right side
   13,940.03x = 159,042,208.06
5. Step 5: Solve for x
   x = 159,042,208.06/13,940.03
6. Step 6: Final answer
   x = 11,409.03