Finding the Fourth Proportional to 12,605.12, 17,394.82 and 7,892

Step by Step Solution

1. Step 1: Write the proportion equation
   12,605.12 : 17,394.82 = 7,892 : x
2. Step 2: Convert to fraction form
   12,605.12/17,394.82 = 7,892/x
3. Step 3: Cross multiply
   12,605.12x = 17,394.82 × 7,892
4. Step 4: Simplify right side
   12,605.12x = 137,279,919.44
5. Step 5: Solve for x
   x = 137,279,919.44/12,605.12
6. Step 6: Final answer
   x = 10,890.81