Finding the Fourth Proportional to 20,582.84, 28,393.88 and 13,016.42

Step by Step Solution

1. Step 1: Write the proportion equation
   20,582.84 : 28,393.88 = 13,016.42 : x
2. Step 2: Convert to fraction form
   20,582.84/28,393.88 = 13,016.42/x
3. Step 3: Cross multiply
   20,582.84x = 28,393.88 × 13,016.42
4. Step 4: Simplify right side
   20,582.84x = 369,586,667.51
5. Step 5: Solve for x
   x = 369,586,667.51/20,582.84
6. Step 6: Final answer
   x = 17,956.06