Finding the Fourth Proportional to 10,687.72, 14,749.38 and 5,972.20

Step by Step Solution

1. Step 1: Write the proportion equation
   10,687.72 : 14,749.38 = 5,972.20 : x
2. Step 2: Convert to fraction form
   10,687.72/14,749.38 = 5,972.20/x
3. Step 3: Cross multiply
   10,687.72x = 14,749.38 × 5,972.20
4. Step 4: Simplify right side
   10,687.72x = 88,086,247.24
5. Step 5: Solve for x
   x = 88,086,247.24/10,687.72
6. Step 6: Final answer
   x = 8,241.82