Finding the Fourth Proportional to 8,485.83, 12,735.77 and 4,328.91

Step by Step Solution

1. Step 1: Write the proportion equation
   8,485.83 : 12,735.77 = 4,328.91 : x
2. Step 2: Convert to fraction form
   8,485.83/12,735.77 = 4,328.91/x
3. Step 3: Cross multiply
   8,485.83x = 12,735.77 × 4,328.91
4. Step 4: Simplify right side
   8,485.83x = 55,131,980.47
5. Step 5: Solve for x
   x = 55,131,980.47/8,485.83
6. Step 6: Final answer
   x = 6,496.95