Finding the Fourth Proportional to 8,459.10, 12,672.84 and 7,081.29

Step by Step Solution

1. Step 1: Write the proportion equation
   8,459.10 : 12,672.84 = 7,081.29 : x
2. Step 2: Convert to fraction form
   8,459.10/12,672.84 = 7,081.29/x
3. Step 3: Cross multiply
   8,459.10x = 12,672.84 × 7,081.29
4. Step 4: Simplify right side
   8,459.10x = 89,740,055.16
5. Step 5: Solve for x
   x = 89,740,055.16/8,459.10
6. Step 6: Final answer
   x = 10,608.70