Finding the Fourth Proportional to 16,678.96, 23,016.10 and 9,123.82

Step by Step Solution

1. Step 1: Write the proportion equation
   16,678.96 : 23,016.10 = 9,123.82 : x
2. Step 2: Convert to fraction form
   16,678.96/23,016.10 = 9,123.82/x
3. Step 3: Cross multiply
   16,678.96x = 23,016.10 × 9,123.82
4. Step 4: Simplify right side
   16,678.96x = 209,994,753.50
5. Step 5: Solve for x
   x = 209,994,753.50/16,678.96
6. Step 6: Final answer
   x = 12,590.40