Finding the Fourth Proportional to 8,611.59, 12,917.63 and 2,371.69

Step by Step Solution

1. Step 1: Write the proportion equation
   8,611.59 : 12,917.63 = 2,371.69 : x
2. Step 2: Convert to fraction form
   8,611.59/12,917.63 = 2,371.69/x
3. Step 3: Cross multiply
   8,611.59x = 12,917.63 × 2,371.69
4. Step 4: Simplify right side
   8,611.59x = 30,636,613.89
5. Step 5: Solve for x
   x = 30,636,613.89/8,611.59
6. Step 6: Final answer
   x = 3,557.60