Finding the Fourth Proportional to 10,971.38, 15,148.82 and 10,949.51

Step by Step Solution

1. Step 1: Write the proportion equation
   10,971.38 : 15,148.82 = 10,949.51 : x
2. Step 2: Convert to fraction form
   10,971.38/15,148.82 = 10,949.51/x
3. Step 3: Cross multiply
   10,971.38x = 15,148.82 × 10,949.51
4. Step 4: Simplify right side
   10,971.38x = 165,872,101.33
5. Step 5: Solve for x
   x = 165,872,101.33/10,971.38
6. Step 6: Final answer
   x = 15,118.62