Finding the Fourth Proportional to 12,340.32, 17,028.72 and 7,305.12

Step by Step Solution

1. Step 1: Write the proportion equation
   12,340.32 : 17,028.72 = 7,305.12 : x
2. Step 2: Convert to fraction form
   12,340.32/17,028.72 = 7,305.12/x
3. Step 3: Cross multiply
   12,340.32x = 17,028.72 × 7,305.12
4. Step 4: Simplify right side
   12,340.32x = 124,396,843.05
5. Step 5: Solve for x
   x = 124,396,843.05/12,340.32
6. Step 6: Final answer
   x = 10,080.52