Finding the Fourth Proportional to 21,392.64, 32,069.52 and 9,699.48

Step by Step Solution

1. Step 1: Write the proportion equation
   21,392.64 : 32,069.52 = 9,699.48 : x
2. Step 2: Convert to fraction form
   21,392.64/32,069.52 = 9,699.48/x
3. Step 3: Cross multiply
   21,392.64x = 32,069.52 × 9,699.48
4. Step 4: Simplify right side
   21,392.64x = 311,057,667.85
5. Step 5: Solve for x
   x = 311,057,667.85/21,392.64
6. Step 6: Final answer
   x = 14,540.41