Finding the Fourth Proportional to 13,936.06, 19,231.71 and 7,648.54

Step by Step Solution

1. Step 1: Write the proportion equation
   13,936.06 : 19,231.71 = 7,648.54 : x
2. Step 2: Convert to fraction form
   13,936.06/19,231.71 = 7,648.54/x
3. Step 3: Cross multiply
   13,936.06x = 19,231.71 × 7,648.54
4. Step 4: Simplify right side
   13,936.06x = 147,094,503.20
5. Step 5: Solve for x
   x = 147,094,503.20/13,936.06
6. Step 6: Final answer
   x = 10,554.96