Finding the Fourth Proportional to 12,105.27, 18,159.05 and 4,710.31

Step by Step Solution

1. Step 1: Write the proportion equation
   12,105.27 : 18,159.05 = 4,710.31 : x
2. Step 2: Convert to fraction form
   12,105.27/18,159.05 = 4,710.31/x
3. Step 3: Cross multiply
   12,105.27x = 18,159.05 × 4,710.31
4. Step 4: Simplify right side
   12,105.27x = 85,534,721.18
5. Step 5: Solve for x
   x = 85,534,721.18/12,105.27
6. Step 6: Final answer
   x = 7,065.91