Finding the Fourth Proportional to 5,815.47, 8,722.59 and 3,443.79

Step by Step Solution

1. Step 1: Write the proportion equation
   5,815.47 : 8,722.59 = 3,443.79 : x
2. Step 2: Convert to fraction form
   5,815.47/8,722.59 = 3,443.79/x
3. Step 3: Cross multiply
   5,815.47x = 8,722.59 × 3,443.79
4. Step 4: Simplify right side
   5,815.47x = 30,038,768.22
5. Step 5: Solve for x
   x = 30,038,768.22/5,815.47
6. Step 6: Final answer
   x = 5,165.32