Finding the Fourth Proportional to 12,394.81, 17,104.94 and 7,089.31

Step by Step Solution

1. Step 1: Write the proportion equation
   12,394.81 : 17,104.94 = 7,089.31 : x
2. Step 2: Convert to fraction form
   12,394.81/17,104.94 = 7,089.31/x
3. Step 3: Cross multiply
   12,394.81x = 17,104.94 × 7,089.31
4. Step 4: Simplify right side
   12,394.81x = 121,262,222.19
5. Step 5: Solve for x
   x = 121,262,222.19/12,394.81
6. Step 6: Final answer
   x = 9,783.31