Finding the Fourth Proportional to 12,016.05, 16,572.76 and 7,709.55

Step by Step Solution

1. Step 1: Write the proportion equation
   12,016.05 : 16,572.76 = 7,709.55 : x
2. Step 2: Convert to fraction form
   12,016.05/16,572.76 = 7,709.55/x
3. Step 3: Cross multiply
   12,016.05x = 16,572.76 × 7,709.55
4. Step 4: Simplify right side
   12,016.05x = 127,768,521.86
5. Step 5: Solve for x
   x = 127,768,521.86/12,016.05
6. Step 6: Final answer
   x = 10,633.15