Finding the Fourth Proportional to 8,342.86, 12,515.38 and 3,081.56

Step by Step Solution

1. Step 1: Write the proportion equation
   8,342.86 : 12,515.38 = 3,081.56 : x
2. Step 2: Convert to fraction form
   8,342.86/12,515.38 = 3,081.56/x
3. Step 3: Cross multiply
   8,342.86x = 12,515.38 × 3,081.56
4. Step 4: Simplify right side
   8,342.86x = 38,566,818.33
5. Step 5: Solve for x
   x = 38,566,818.33/8,342.86
6. Step 6: Final answer
   x = 4,622.73