Finding the Fourth Proportional to 11,123.84, 16,751.59 and 9,680.42

Step by Step Solution

1. Step 1: Write the proportion equation
   11,123.84 : 16,751.59 = 9,680.42 : x
2. Step 2: Convert to fraction form
   11,123.84/16,751.59 = 9,680.42/x
3. Step 3: Cross multiply
   11,123.84x = 16,751.59 × 9,680.42
4. Step 4: Simplify right side
   11,123.84x = 162,162,426.87
5. Step 5: Solve for x
   x = 162,162,426.87/11,123.84
6. Step 6: Final answer
   x = 14,577.92