Finding the Fourth Proportional to 17,061.35, 23,567.63 and 15,469.80

Step by Step Solution

1. Step 1: Write the proportion equation
   17,061.35 : 23,567.63 = 15,469.80 : x
2. Step 2: Convert to fraction form
   17,061.35/23,567.63 = 15,469.80/x
3. Step 3: Cross multiply
   17,061.35x = 23,567.63 × 15,469.80
4. Step 4: Simplify right side
   17,061.35x = 364,586,489.41
5. Step 5: Solve for x
   x = 364,586,489.41/17,061.35
6. Step 6: Final answer
   x = 21,369.15