Finding the Fourth Proportional to 7,311.13, 10,086.73 and 4,165.50

Step by Step Solution

1. Step 1: Write the proportion equation
   7,311.13 : 10,086.73 = 4,165.50 : x
2. Step 2: Convert to fraction form
   7,311.13/10,086.73 = 4,165.50/x
3. Step 3: Cross multiply
   7,311.13x = 10,086.73 × 4,165.50
4. Step 4: Simplify right side
   7,311.13x = 42,016,273.82
5. Step 5: Solve for x
   x = 42,016,273.82/7,311.13
6. Step 6: Final answer
   x = 5,746.89