Finding the Fourth Proportional to 8,611.83, 12,917.72 and 3,065.39

Step by Step Solution

1. Step 1: Write the proportion equation
   8,611.83 : 12,917.72 = 3,065.39 : x
2. Step 2: Convert to fraction form
   8,611.83/12,917.72 = 3,065.39/x
3. Step 3: Cross multiply
   8,611.83x = 12,917.72 × 3,065.39
4. Step 4: Simplify right side
   8,611.83x = 39,597,769.80
5. Step 5: Solve for x
   x = 39,597,769.80/8,611.83
6. Step 6: Final answer
   x = 4,598.07