Finding the Fourth Proportional to 19,986.52, 29,981.42 and 11,667.41

Step by Step Solution

1. Step 1: Write the proportion equation
   19,986.52 : 29,981.42 = 11,667.41 : x
2. Step 2: Convert to fraction form
   19,986.52/29,981.42 = 11,667.41/x
3. Step 3: Cross multiply
   19,986.52x = 29,981.42 × 11,667.41
4. Step 4: Simplify right side
   19,986.52x = 349,805,519.52
5. Step 5: Solve for x
   x = 349,805,519.52/19,986.52
6. Step 6: Final answer
   x = 17,502.07