Finding the Fourth Proportional to 8,098.86, 12,144.78 and 3,420.96

Step by Step Solution

1. Step 1: Write the proportion equation
   8,098.86 : 12,144.78 = 3,420.96 : x
2. Step 2: Convert to fraction form
   8,098.86/12,144.78 = 3,420.96/x
3. Step 3: Cross multiply
   8,098.86x = 12,144.78 × 3,420.96
4. Step 4: Simplify right side
   8,098.86x = 41,546,806.59
5. Step 5: Solve for x
   x = 41,546,806.59/8,098.86
6. Step 6: Final answer
   x = 5,129.96