Finding the Fourth Proportional to 13,250, 19,857.96 and 10,118.48

Step by Step Solution

1. Step 1: Write the proportion equation
   13,250 : 19,857.96 = 10,118.48 : x
2. Step 2: Convert to fraction form
   13,250/19,857.96 = 10,118.48/x
3. Step 3: Cross multiply
   13,250x = 19,857.96 × 10,118.48
4. Step 4: Simplify right side
   13,250x = 200,932,371.10
5. Step 5: Solve for x
   x = 200,932,371.10/13,250
6. Step 6: Final answer
   x = 15,164.71