Finding the Fourth Proportional to 16,298.21, 24,405.93 and 13,658.78

Step by Step Solution

1. Step 1: Write the proportion equation
   16,298.21 : 24,405.93 = 13,658.78 : x
2. Step 2: Convert to fraction form
   16,298.21/24,405.93 = 13,658.78/x
3. Step 3: Cross multiply
   16,298.21x = 24,405.93 × 13,658.78
4. Step 4: Simplify right side
   16,298.21x = 333,355,228.57
5. Step 5: Solve for x
   x = 333,355,228.57/16,298.21
6. Step 6: Final answer
   x = 20,453.49