Finding the Fourth Proportional to 11,687.52, 16,131.72 and 7,214.97

Step by Step Solution

1. Step 1: Write the proportion equation
   11,687.52 : 16,131.72 = 7,214.97 : x
2. Step 2: Convert to fraction form
   11,687.52/16,131.72 = 7,214.97/x
3. Step 3: Cross multiply
   11,687.52x = 16,131.72 × 7,214.97
4. Step 4: Simplify right side
   11,687.52x = 116,389,875.85
5. Step 5: Solve for x
   x = 116,389,875.85/11,687.52
6. Step 6: Final answer
   x = 9,958.48