Finding the Fourth Proportional to 13,837.06, 20,769.72 and 10,128.27

Step by Step Solution

1. Step 1: Write the proportion equation
   13,837.06 : 20,769.72 = 10,128.27 : x
2. Step 2: Convert to fraction form
   13,837.06/20,769.72 = 10,128.27/x
3. Step 3: Cross multiply
   13,837.06x = 20,769.72 × 10,128.27
4. Step 4: Simplify right side
   13,837.06x = 210,361,371.89
5. Step 5: Solve for x
   x = 210,361,371.89/13,837.06
6. Step 6: Final answer
   x = 15,202.75