Finding the Fourth Proportional to 12,410.92, 17,128.42 and 7,107.48

Step by Step Solution

1. Step 1: Write the proportion equation
   12,410.92 : 17,128.42 = 7,107.48 : x
2. Step 2: Convert to fraction form
   12,410.92/17,128.42 = 7,107.48/x
3. Step 3: Cross multiply
   12,410.92x = 17,128.42 × 7,107.48
4. Step 4: Simplify right side
   12,410.92x = 121,739,902.58
5. Step 5: Solve for x
   x = 121,739,902.58/12,410.92
6. Step 6: Final answer
   x = 9,809.10