Finding the Fourth Proportional to 15,196.96, 20,971.84 and 8,482.59

Step by Step Solution

1. Step 1: Write the proportion equation
   15,196.96 : 20,971.84 = 8,482.59 : x
2. Step 2: Convert to fraction form
   15,196.96/20,971.84 = 8,482.59/x
3. Step 3: Cross multiply
   15,196.96x = 20,971.84 × 8,482.59
4. Step 4: Simplify right side
   15,196.96x = 177,895,520.27
5. Step 5: Solve for x
   x = 177,895,520.27/15,196.96
6. Step 6: Final answer
   x = 11,705.99