Finding the Fourth Proportional to 8,383.46, 12,570.30 and 4,485.74

Step by Step Solution

1. Step 1: Write the proportion equation
   8,383.46 : 12,570.30 = 4,485.74 : x
2. Step 2: Convert to fraction form
   8,383.46/12,570.30 = 4,485.74/x
3. Step 3: Cross multiply
   8,383.46x = 12,570.30 × 4,485.74
4. Step 4: Simplify right side
   8,383.46x = 56,387,097.52
5. Step 5: Solve for x
   x = 56,387,097.52/8,383.46
6. Step 6: Final answer
   x = 6,725.99