Finding the Fourth Proportional to 15,817.32, 21,826.81 and 8,743.19

Step by Step Solution

1. Step 1: Write the proportion equation
   15,817.32 : 21,826.81 = 8,743.19 : x
2. Step 2: Convert to fraction form
   15,817.32/21,826.81 = 8,743.19/x
3. Step 3: Cross multiply
   15,817.32x = 21,826.81 × 8,743.19
4. Step 4: Simplify right side
   15,817.32x = 190,835,870.50
5. Step 5: Solve for x
   x = 190,835,870.50/15,817.32
6. Step 6: Final answer
   x = 12,064.99