Finding the Fourth Proportional to 15,079.50, 20,806.59 and 8,705.98

Step by Step Solution

1. Step 1: Write the proportion equation
   15,079.50 : 20,806.59 = 8,705.98 : x
2. Step 2: Convert to fraction form
   15,079.50/20,806.59 = 8,705.98/x
3. Step 3: Cross multiply
   15,079.50x = 20,806.59 × 8,705.98
4. Step 4: Simplify right side
   15,079.50x = 181,141,608.85
5. Step 5: Solve for x
   x = 181,141,608.85/15,079.50
6. Step 6: Final answer
   x = 12,012.45