Finding the Fourth Proportional to 15,669.48, 21,609.72 and 10,369.56

Step by Step Solution

1. Step 1: Write the proportion equation
   15,669.48 : 21,609.72 = 10,369.56 : x
2. Step 2: Convert to fraction form
   15,669.48/21,609.72 = 10,369.56/x
3. Step 3: Cross multiply
   15,669.48x = 21,609.72 × 10,369.56
4. Step 4: Simplify right side
   15,669.48x = 224,083,288.12
5. Step 5: Solve for x
   x = 224,083,288.12/15,669.48
6. Step 6: Final answer
   x = 14,300.62