Finding the Fourth Proportional to 11,815.31, 17,721.59 and 3,049.53

Step by Step Solution

1. Step 1: Write the proportion equation
   11,815.31 : 17,721.59 = 3,049.53 : x
2. Step 2: Convert to fraction form
   11,815.31/17,721.59 = 3,049.53/x
3. Step 3: Cross multiply
   11,815.31x = 17,721.59 × 3,049.53
4. Step 4: Simplify right side
   11,815.31x = 54,042,505.11
5. Step 5: Solve for x
   x = 54,042,505.11/11,815.31
6. Step 6: Final answer
   x = 4,573.94