Finding the Fourth Proportional to 21,928.88, 32,910.60 and 10,835.12

Step by Step Solution

1. Step 1: Write the proportion equation
   21,928.88 : 32,910.60 = 10,835.12 : x
2. Step 2: Convert to fraction form
   21,928.88/32,910.60 = 10,835.12/x
3. Step 3: Cross multiply
   21,928.88x = 32,910.60 × 10,835.12
4. Step 4: Simplify right side
   21,928.88x = 356,590,300.27
5. Step 5: Solve for x
   x = 356,590,300.27/21,928.88
6. Step 6: Final answer
   x = 16,261.22