Finding the Fourth Proportional to 8,456.43, 12,670.06 and 5,605.16

Step by Step Solution

1. Step 1: Write the proportion equation
   8,456.43 : 12,670.06 = 5,605.16 : x
2. Step 2: Convert to fraction form
   8,456.43/12,670.06 = 5,605.16/x
3. Step 3: Cross multiply
   8,456.43x = 12,670.06 × 5,605.16
4. Step 4: Simplify right side
   8,456.43x = 71,017,713.51
5. Step 5: Solve for x
   x = 71,017,713.51/8,456.43
6. Step 6: Final answer
   x = 8,398.07