Finding the Fourth Proportional to 21,667.52, 32,455.92 and 13,836.48

Step by Step Solution

1. Step 1: Write the proportion equation
   21,667.52 : 32,455.92 = 13,836.48 : x
2. Step 2: Convert to fraction form
   21,667.52/32,455.92 = 13,836.48/x
3. Step 3: Cross multiply
   21,667.52x = 32,455.92 × 13,836.48
4. Step 4: Simplify right side
   21,667.52x = 449,075,687.96
5. Step 5: Solve for x
   x = 449,075,687.96/21,667.52
6. Step 6: Final answer
   x = 20,725.75