Finding the Fourth Proportional to 20,823.50, 28,735.88 and 12,326.06

Step by Step Solution

1. Step 1: Write the proportion equation
   20,823.50 : 28,735.88 = 12,326.06 : x
2. Step 2: Convert to fraction form
   20,823.50/28,735.88 = 12,326.06/x
3. Step 3: Cross multiply
   20,823.50x = 28,735.88 × 12,326.06
4. Step 4: Simplify right side
   20,823.50x = 354,200,181.03
5. Step 5: Solve for x
   x = 354,200,181.03/20,823.50
6. Step 6: Final answer
   x = 17,009.64