Finding the Fourth Proportional to 12,784.36, 17,641.15 and 7,118.89

Step by Step Solution

1. Step 1: Write the proportion equation
   12,784.36 : 17,641.15 = 7,118.89 : x
2. Step 2: Convert to fraction form
   12,784.36/17,641.15 = 7,118.89/x
3. Step 3: Cross multiply
   12,784.36x = 17,641.15 × 7,118.89
4. Step 4: Simplify right side
   12,784.36x = 125,585,394.48
5. Step 5: Solve for x
   x = 125,585,394.48/12,784.36
6. Step 6: Final answer
   x = 9,823.36