Finding the Fourth Proportional to 8,440.83, 12,638.46 and 5,661.52

Step by Step Solution

1. Step 1: Write the proportion equation
   8,440.83 : 12,638.46 = 5,661.52 : x
2. Step 2: Convert to fraction form
   8,440.83/12,638.46 = 5,661.52/x
3. Step 3: Cross multiply
   8,440.83x = 12,638.46 × 5,661.52
4. Step 4: Simplify right side
   8,440.83x = 71,552,802.56
5. Step 5: Solve for x
   x = 71,552,802.56/8,440.83
6. Step 6: Final answer
   x = 8,476.99