Finding the Fourth Proportional to 16,381.68, 24,555.24 and 7,018.80

Step by Step Solution

1. Step 1: Write the proportion equation
   16,381.68 : 24,555.24 = 7,018.80 : x
2. Step 2: Convert to fraction form
   16,381.68/24,555.24 = 7,018.80/x
3. Step 3: Cross multiply
   16,381.68x = 24,555.24 × 7,018.80
4. Step 4: Simplify right side
   16,381.68x = 172,348,318.51
5. Step 5: Solve for x
   x = 172,348,318.51/16,381.68
6. Step 6: Final answer
   x = 10,520.80