Finding the Fourth Proportional to 8,069.10, 12,100.54 and 3,138.08

Step by Step Solution

1. Step 1: Write the proportion equation
   8,069.10 : 12,100.54 = 3,138.08 : x
2. Step 2: Convert to fraction form
   8,069.10/12,100.54 = 3,138.08/x
3. Step 3: Cross multiply
   8,069.10x = 12,100.54 × 3,138.08
4. Step 4: Simplify right side
   8,069.10x = 37,972,462.56
5. Step 5: Solve for x
   x = 37,972,462.56/8,069.10
6. Step 6: Final answer
   x = 4,705.91