Finding the Fourth Proportional to 19,111.50, 26,373.96 and 10,728

Step by Step Solution

1. Step 1: Write the proportion equation
   19,111.50 : 26,373.96 = 10,728 : x
2. Step 2: Convert to fraction form
   19,111.50/26,373.96 = 10,728/x
3. Step 3: Cross multiply
   19,111.50x = 26,373.96 × 10,728
4. Step 4: Simplify right side
   19,111.50x = 282,939,842.88
5. Step 5: Solve for x
   x = 282,939,842.88/19,111.50
6. Step 6: Final answer
   x = 14,804.69