Finding the Fourth Proportional to 11,997.05, 17,987.87 and 4,981.91

Step by Step Solution

1. Step 1: Write the proportion equation
   11,997.05 : 17,987.87 = 4,981.91 : x
2. Step 2: Convert to fraction form
   11,997.05/17,987.87 = 4,981.91/x
3. Step 3: Cross multiply
   11,997.05x = 17,987.87 × 4,981.91
4. Step 4: Simplify right side
   11,997.05x = 89,613,949.43
5. Step 5: Solve for x
   x = 89,613,949.43/11,997.05
6. Step 6: Final answer
   x = 7,469.67