Finding the Fourth Proportional to 11,086.72, 15,296.01 and 7,311.76

Step by Step Solution

1. Step 1: Write the proportion equation
   11,086.72 : 15,296.01 = 7,311.76 : x
2. Step 2: Convert to fraction form
   11,086.72/15,296.01 = 7,311.76/x
3. Step 3: Cross multiply
   11,086.72x = 15,296.01 × 7,311.76
4. Step 4: Simplify right side
   11,086.72x = 111,840,728.60
5. Step 5: Solve for x
   x = 111,840,728.60/11,086.72
6. Step 6: Final answer
   x = 10,087.81