Finding the Fourth Proportional to 13,940.06, 19,222.53 and 9,959.72

Step by Step Solution

1. Step 1: Write the proportion equation
   13,940.06 : 19,222.53 = 9,959.72 : x
2. Step 2: Convert to fraction form
   13,940.06/19,222.53 = 9,959.72/x
3. Step 3: Cross multiply
   13,940.06x = 19,222.53 × 9,959.72
4. Step 4: Simplify right side
   13,940.06x = 191,451,016.49
5. Step 5: Solve for x
   x = 191,451,016.49/13,940.06
6. Step 6: Final answer
   x = 13,733.87