Finding the Fourth Proportional to 16,298.70, 22,493.43 and 9,128.25

Step by Step Solution

1. Step 1: Write the proportion equation
   16,298.70 : 22,493.43 = 9,128.25 : x
2. Step 2: Convert to fraction form
   16,298.70/22,493.43 = 9,128.25/x
3. Step 3: Cross multiply
   16,298.70x = 22,493.43 × 9,128.25
4. Step 4: Simplify right side
   16,298.70x = 205,325,652.40
5. Step 5: Solve for x
   x = 205,325,652.40/16,298.70
6. Step 6: Final answer
   x = 12,597.67