Finding the Fourth Proportional to 10,997.31, 15,176.16 and 5,961.54

Step by Step Solution

1. Step 1: Write the proportion equation
   10,997.31 : 15,176.16 = 5,961.54 : x
2. Step 2: Convert to fraction form
   10,997.31/15,176.16 = 5,961.54/x
3. Step 3: Cross multiply
   10,997.31x = 15,176.16 × 5,961.54
4. Step 4: Simplify right side
   10,997.31x = 90,473,284.89
5. Step 5: Solve for x
   x = 90,473,284.89/10,997.31
6. Step 6: Final answer
   x = 8,226.86