Finding the Fourth Proportional to 8,069.31, 12,098.79 and 3,134.89

Step by Step Solution

1. Step 1: Write the proportion equation
   8,069.31 : 12,098.79 = 3,134.89 : x
2. Step 2: Convert to fraction form
   8,069.31/12,098.79 = 3,134.89/x
3. Step 3: Cross multiply
   8,069.31x = 12,098.79 × 3,134.89
4. Step 4: Simplify right side
   8,069.31x = 37,928,375.78
5. Step 5: Solve for x
   x = 37,928,375.78/8,069.31
6. Step 6: Final answer
   x = 4,700.32