Finding the Fourth Proportional to 11,922, 17,877.18 and 3,600.42

Step by Step Solution

1. Step 1: Write the proportion equation
   11,922 : 17,877.18 = 3,600.42 : x
2. Step 2: Convert to fraction form
   11,922/17,877.18 = 3,600.42/x
3. Step 3: Cross multiply
   11,922x = 17,877.18 × 3,600.42
4. Step 4: Simplify right side
   11,922x = 64,365,356.42
5. Step 5: Solve for x
   x = 64,365,356.42/11,922
6. Step 6: Final answer
   x = 5,398.87