Finding the Fourth Proportional to 19,942.02, 27,518.49 and 10,989

Step by Step Solution

1. Step 1: Write the proportion equation
   19,942.02 : 27,518.49 = 10,989 : x
2. Step 2: Convert to fraction form
   19,942.02/27,518.49 = 10,989/x
3. Step 3: Cross multiply
   19,942.02x = 27,518.49 × 10,989
4. Step 4: Simplify right side
   19,942.02x = 302,400,686.61
5. Step 5: Solve for x
   x = 302,400,686.61/19,942.02
6. Step 6: Final answer
   x = 15,163.99