Finding the Fourth Proportional to 10,117.39, 13,956.69 and 8,231.05

Step by Step Solution

1. Step 1: Write the proportion equation
   10,117.39 : 13,956.69 = 8,231.05 : x
2. Step 2: Convert to fraction form
   10,117.39/13,956.69 = 8,231.05/x
3. Step 3: Cross multiply
   10,117.39x = 13,956.69 × 8,231.05
4. Step 4: Simplify right side
   10,117.39x = 114,878,213.22
5. Step 5: Solve for x
   x = 114,878,213.22/10,117.39
6. Step 6: Final answer
   x = 11,354.53