Finding the Fourth Proportional to 10,081.31, 13,906.43 and 8,370.14

Step by Step Solution

1. Step 1: Write the proportion equation
   10,081.31 : 13,906.43 = 8,370.14 : x
2. Step 2: Convert to fraction form
   10,081.31/13,906.43 = 8,370.14/x
3. Step 3: Cross multiply
   10,081.31x = 13,906.43 × 8,370.14
4. Step 4: Simplify right side
   10,081.31x = 116,398,733.09
5. Step 5: Solve for x
   x = 116,398,733.09/10,081.31
6. Step 6: Final answer
   x = 11,545.99