Finding the Fourth Proportional to 12,661.73, 17,473.61 and 7,948.61

Step by Step Solution

1. Step 1: Write the proportion equation
   12,661.73 : 17,473.61 = 7,948.61 : x
2. Step 2: Convert to fraction form
   12,661.73/17,473.61 = 7,948.61/x
3. Step 3: Cross multiply
   12,661.73x = 17,473.61 × 7,948.61
4. Step 4: Simplify right side
   12,661.73x = 138,890,843.69
5. Step 5: Solve for x
   x = 138,890,843.69/12,661.73
6. Step 6: Final answer
   x = 10,969.35