Finding the Fourth Proportional to 12,769.32, 17,630.34 and 9,412.52

Step by Step Solution

1. Step 1: Write the proportion equation
   12,769.32 : 17,630.34 = 9,412.52 : x
2. Step 2: Convert to fraction form
   12,769.32/17,630.34 = 9,412.52/x
3. Step 3: Cross multiply
   12,769.32x = 17,630.34 × 9,412.52
4. Step 4: Simplify right side
   12,769.32x = 165,945,927.86
5. Step 5: Solve for x
   x = 165,945,927.86/12,769.32
6. Step 6: Final answer
   x = 12,995.67