Finding the Fourth Proportional to 8,278.86, 12,420.18 and 2,435.94

Step by Step Solution

1. Step 1: Write the proportion equation
   8,278.86 : 12,420.18 = 2,435.94 : x
2. Step 2: Convert to fraction form
   8,278.86/12,420.18 = 2,435.94/x
3. Step 3: Cross multiply
   8,278.86x = 12,420.18 × 2,435.94
4. Step 4: Simplify right side
   8,278.86x = 30,254,813.27
5. Step 5: Solve for x
   x = 30,254,813.27/8,278.86
6. Step 6: Final answer
   x = 3,654.47