Finding the Fourth Proportional to 15,769.34, 21,764.84 and 9,059.57

Step by Step Solution

1. Step 1: Write the proportion equation
   15,769.34 : 21,764.84 = 9,059.57 : x
2. Step 2: Convert to fraction form
   15,769.34/21,764.84 = 9,059.57/x
3. Step 3: Cross multiply
   15,769.34x = 21,764.84 × 9,059.57
4. Step 4: Simplify right side
   15,769.34x = 197,180,091.52
5. Step 5: Solve for x
   x = 197,180,091.52/15,769.34
6. Step 6: Final answer
   x = 12,504.02