Finding the Fourth Proportional to 12,846.43, 19,255.82 and 8,402.42

Step by Step Solution

1. Step 1: Write the proportion equation
   12,846.43 : 19,255.82 = 8,402.42 : x
2. Step 2: Convert to fraction form
   12,846.43/19,255.82 = 8,402.42/x
3. Step 3: Cross multiply
   12,846.43x = 19,255.82 × 8,402.42
4. Step 4: Simplify right side
   12,846.43x = 161,795,411.81
5. Step 5: Solve for x
   x = 161,795,411.81/12,846.43
6. Step 6: Final answer
   x = 12,594.58