Finding the Fourth Proportional to 13,127.32, 19,683.42 and 5,728.24

Step by Step Solution

1. Step 1: Write the proportion equation
   13,127.32 : 19,683.42 = 5,728.24 : x
2. Step 2: Convert to fraction form
   13,127.32/19,683.42 = 5,728.24/x
3. Step 3: Cross multiply
   13,127.32x = 19,683.42 × 5,728.24
4. Step 4: Simplify right side
   13,127.32x = 112,751,353.78
5. Step 5: Solve for x
   x = 112,751,353.78/13,127.32
6. Step 6: Final answer
   x = 8,589.06