Finding the Fourth Proportional to 16,093.64, 22,216.98 and 10,128.20

Step by Step Solution

1. Step 1: Write the proportion equation
   16,093.64 : 22,216.98 = 10,128.20 : x
2. Step 2: Convert to fraction form
   16,093.64/22,216.98 = 10,128.20/x
3. Step 3: Cross multiply
   16,093.64x = 22,216.98 × 10,128.20
4. Step 4: Simplify right side
   16,093.64x = 225,018,016.84
5. Step 5: Solve for x
   x = 225,018,016.84/16,093.64
6. Step 6: Final answer
   x = 13,981.80