Finding the Fourth Proportional to 11,973.48, 17,854.74 and 11,142.42

Step by Step Solution

1. Step 1: Write the proportion equation
   11,973.48 : 17,854.74 = 11,142.42 : x
2. Step 2: Convert to fraction form
   11,973.48/17,854.74 = 11,142.42/x
3. Step 3: Cross multiply
   11,973.48x = 17,854.74 × 11,142.42
4. Step 4: Simplify right side
   11,973.48x = 198,945,012.07
5. Step 5: Solve for x
   x = 198,945,012.07/11,973.48
6. Step 6: Final answer
   x = 16,615.47