Finding the Fourth Proportional to 8,289.57, 12,421.59 and 3,844.50

Step by Step Solution

1. Step 1: Write the proportion equation
   8,289.57 : 12,421.59 = 3,844.50 : x
2. Step 2: Convert to fraction form
   8,289.57/12,421.59 = 3,844.50/x
3. Step 3: Cross multiply
   8,289.57x = 12,421.59 × 3,844.50
4. Step 4: Simplify right side
   8,289.57x = 47,754,802.76
5. Step 5: Solve for x
   x = 47,754,802.76/8,289.57
6. Step 6: Final answer
   x = 5,760.83