Finding the Fourth Proportional to 21,665.34, 32,487.66 and 13,763.52

Step by Step Solution

1. Step 1: Write the proportion equation
   21,665.34 : 32,487.66 = 13,763.52 : x
2. Step 2: Convert to fraction form
   21,665.34/32,487.66 = 13,763.52/x
3. Step 3: Cross multiply
   21,665.34x = 32,487.66 × 13,763.52
4. Step 4: Simplify right side
   21,665.34x = 447,144,558.16
5. Step 5: Solve for x
   x = 447,144,558.16/21,665.34
6. Step 6: Final answer
   x = 20,638.70