Finding the Fourth Proportional to 10,104.72, 13,940.73 and 10,089.14

Step by Step Solution

1. Step 1: Write the proportion equation
   10,104.72 : 13,940.73 = 10,089.14 : x
2. Step 2: Convert to fraction form
   10,104.72/13,940.73 = 10,089.14/x
3. Step 3: Cross multiply
   10,104.72x = 13,940.73 × 10,089.14
4. Step 4: Simplify right side
   10,104.72x = 140,649,976.67
5. Step 5: Solve for x
   x = 140,649,976.67/10,104.72
6. Step 6: Final answer
   x = 13,919.24