Finding the Fourth Proportional to 20,142.02, 27,796.82 and 11,189.59

Step by Step Solution

1. Step 1: Write the proportion equation
   20,142.02 : 27,796.82 = 11,189.59 : x
2. Step 2: Convert to fraction form
   20,142.02/27,796.82 = 11,189.59/x
3. Step 3: Cross multiply
   20,142.02x = 27,796.82 × 11,189.59
4. Step 4: Simplify right side
   20,142.02x = 311,035,019.10
5. Step 5: Solve for x
   x = 311,035,019.10/20,142.02
6. Step 6: Final answer
   x = 15,442.10