Finding the Fourth Proportional to 10,139.01, 13,991.49 and 5,662.73

Step by Step Solution

1. Step 1: Write the proportion equation
   10,139.01 : 13,991.49 = 5,662.73 : x
2. Step 2: Convert to fraction form
   10,139.01/13,991.49 = 5,662.73/x
3. Step 3: Cross multiply
   10,139.01x = 13,991.49 × 5,662.73
4. Step 4: Simplify right side
   10,139.01x = 79,229,960.21
5. Step 5: Solve for x
   x = 79,229,960.21/10,139.01
6. Step 6: Final answer
   x = 7,814.37