Finding the Fourth Proportional to 8,659.96, 12,971.89 and 8,037.30

Step by Step Solution

1. Step 1: Write the proportion equation
   8,659.96 : 12,971.89 = 8,037.30 : x
2. Step 2: Convert to fraction form
   8,659.96/12,971.89 = 8,037.30/x
3. Step 3: Cross multiply
   8,659.96x = 12,971.89 × 8,037.30
4. Step 4: Simplify right side
   8,659.96x = 104,258,971.50
5. Step 5: Solve for x
   x = 104,258,971.50/8,659.96
6. Step 6: Final answer
   x = 12,039.20