Finding the Fourth Proportional to 12,310.72, 16,986.81 and 7,005.62

Step by Step Solution

1. Step 1: Write the proportion equation
   12,310.72 : 16,986.81 = 7,005.62 : x
2. Step 2: Convert to fraction form
   12,310.72/16,986.81 = 7,005.62/x
3. Step 3: Cross multiply
   12,310.72x = 16,986.81 × 7,005.62
4. Step 4: Simplify right side
   12,310.72x = 119,003,204.61
5. Step 5: Solve for x
   x = 119,003,204.61/12,310.72
6. Step 6: Final answer
   x = 9,666.63