Finding the Fourth Proportional to 10,954.14, 15,091.82 and 10,215.42

Step by Step Solution

1. Step 1: Write the proportion equation
   10,954.14 : 15,091.82 = 10,215.42 : x
2. Step 2: Convert to fraction form
   10,954.14/15,091.82 = 10,215.42/x
3. Step 3: Cross multiply
   10,954.14x = 15,091.82 × 10,215.42
4. Step 4: Simplify right side
   10,954.14x = 154,169,279.86
5. Step 5: Solve for x
   x = 154,169,279.86/10,954.14
6. Step 6: Final answer
   x = 14,074.07