Finding the Fourth Proportional to 8,440.12, 12,647.86 and 5,973.60

Step by Step Solution

1. Step 1: Write the proportion equation
   8,440.12 : 12,647.86 = 5,973.60 : x
2. Step 2: Convert to fraction form
   8,440.12/12,647.86 = 5,973.60/x
3. Step 3: Cross multiply
   8,440.12x = 12,647.86 × 5,973.60
4. Step 4: Simplify right side
   8,440.12x = 75,553,256.50
5. Step 5: Solve for x
   x = 75,553,256.50/8,440.12
6. Step 6: Final answer
   x = 8,951.68