Finding the Fourth Proportional to 8,402.89, 12,606.15 and 2,559.34

Step by Step Solution

1. Step 1: Write the proportion equation
   8,402.89 : 12,606.15 = 2,559.34 : x
2. Step 2: Convert to fraction form
   8,402.89/12,606.15 = 2,559.34/x
3. Step 3: Cross multiply
   8,402.89x = 12,606.15 × 2,559.34
4. Step 4: Simplify right side
   8,402.89x = 32,263,423.94
5. Step 5: Solve for x
   x = 32,263,423.94/8,402.89
6. Step 6: Final answer
   x = 3,839.57