Finding the Fourth Proportional to 11,996.72, 17,987.38 and 4,981.58

Step by Step Solution

1. Step 1: Write the proportion equation
   11,996.72 : 17,987.38 = 4,981.58 : x
2. Step 2: Convert to fraction form
   11,996.72/17,987.38 = 4,981.58/x
3. Step 3: Cross multiply
   11,996.72x = 17,987.38 × 4,981.58
4. Step 4: Simplify right side
   11,996.72x = 89,605,493.94
5. Step 5: Solve for x
   x = 89,605,493.94/11,996.72
6. Step 6: Final answer
   x = 7,469.17