Finding the Fourth Proportional to 11,992.73, 17,987.47 and 3,228.17

Step by Step Solution

1. Step 1: Write the proportion equation
   11,992.73 : 17,987.47 = 3,228.17 : x
2. Step 2: Convert to fraction form
   11,992.73/17,987.47 = 3,228.17/x
3. Step 3: Cross multiply
   11,992.73x = 17,987.47 × 3,228.17
4. Step 4: Simplify right side
   11,992.73x = 58,066,513.02
5. Step 5: Solve for x
   x = 58,066,513.02/11,992.73
6. Step 6: Final answer
   x = 4,841.81