Finding the Fourth Proportional to 16,679.82, 23,018.73 and 9,510.78

Step by Step Solution

1. Step 1: Write the proportion equation
   16,679.82 : 23,018.73 = 9,510.78 : x
2. Step 2: Convert to fraction form
   16,679.82/23,018.73 = 9,510.78/x
3. Step 3: Cross multiply
   16,679.82x = 23,018.73 × 9,510.78
4. Step 4: Simplify right side
   16,679.82x = 218,926,029.36
5. Step 5: Solve for x
   x = 218,926,029.36/16,679.82
6. Step 6: Final answer
   x = 13,125.20