Finding the Fourth Proportional to 10,139.04, 13,991.22 and 5,662.68

Step by Step Solution

1. Step 1: Write the proportion equation
   10,139.04 : 13,991.22 = 5,662.68 : x
2. Step 2: Convert to fraction form
   10,139.04/13,991.22 = 5,662.68/x
3. Step 3: Cross multiply
   10,139.04x = 13,991.22 × 5,662.68
4. Step 4: Simplify right side
   10,139.04x = 79,227,801.67
5. Step 5: Solve for x
   x = 79,227,801.67/10,139.04
6. Step 6: Final answer
   x = 7,814.13