Finding the Fourth Proportional to 8,098.79, 12,140.89 and 3,171.96

Step by Step Solution

1. Step 1: Write the proportion equation
   8,098.79 : 12,140.89 = 3,171.96 : x
2. Step 2: Convert to fraction form
   8,098.79/12,140.89 = 3,171.96/x
3. Step 3: Cross multiply
   8,098.79x = 12,140.89 × 3,171.96
4. Step 4: Simplify right side
   8,098.79x = 38,510,409.51
5. Step 5: Solve for x
   x = 38,510,409.51/8,098.79
6. Step 6: Final answer
   x = 4,755.08