Finding the Fourth Proportional to 12,069.92, 16,631.52 and 9,702.56

Step by Step Solution

1. Step 1: Write the proportion equation
   12,069.92 : 16,631.52 = 9,702.56 : x
2. Step 2: Convert to fraction form
   12,069.92/16,631.52 = 9,702.56/x
3. Step 3: Cross multiply
   12,069.92x = 16,631.52 × 9,702.56
4. Step 4: Simplify right side
   12,069.92x = 161,368,320.69
5. Step 5: Solve for x
   x = 161,368,320.69/12,069.92
6. Step 6: Final answer
   x = 13,369.46