Finding the Fourth Proportional to 13,162, 19,743.18 and 3,928

Step by Step Solution

1. Step 1: Write the proportion equation
   13,162 : 19,743.18 = 3,928 : x
2. Step 2: Convert to fraction form
   13,162/19,743.18 = 3,928/x
3. Step 3: Cross multiply
   13,162x = 19,743.18 × 3,928
4. Step 4: Simplify right side
   13,162x = 77,551,211.04
5. Step 5: Solve for x
   x = 77,551,211.04/13,162
6. Step 6: Final answer
   x = 5,892.05