Finding the Fourth Proportional to 3,647.73, 5,034.59 and 2,155.58

Step by Step Solution

1. Step 1: Write the proportion equation
   3,647.73 : 5,034.59 = 2,155.58 : x
2. Step 2: Convert to fraction form
   3,647.73/5,034.59 = 2,155.58/x
3. Step 3: Cross multiply
   3,647.73x = 5,034.59 × 2,155.58
4. Step 4: Simplify right side
   3,647.73x = 10,852,425.56
5. Step 5: Solve for x
   x = 10,852,425.56/3,647.73
6. Step 6: Final answer
   x = 2,975.12