Finding the Fourth Proportional to 21,986.82, 30,342.06 and 13,030.92

Step by Step Solution

1. Step 1: Write the proportion equation
   21,986.82 : 30,342.06 = 13,030.92 : x
2. Step 2: Convert to fraction form
   21,986.82/30,342.06 = 13,030.92/x
3. Step 3: Cross multiply
   21,986.82x = 30,342.06 × 13,030.92
4. Step 4: Simplify right side
   21,986.82x = 395,384,956.50
5. Step 5: Solve for x
   x = 395,384,956.50/21,986.82
6. Step 6: Final answer
   x = 17,982.82