Finding the Fourth Proportional to 10,883.12, 16,291.87 and 7,173.72

Step by Step Solution

1. Step 1: Write the proportion equation
   10,883.12 : 16,291.87 = 7,173.72 : x
2. Step 2: Convert to fraction form
   10,883.12/16,291.87 = 7,173.72/x
3. Step 3: Cross multiply
   10,883.12x = 16,291.87 × 7,173.72
4. Step 4: Simplify right side
   10,883.12x = 116,873,295.72
5. Step 5: Solve for x
   x = 116,873,295.72/10,883.12
6. Step 6: Final answer
   x = 10,738.96