Finding the Fourth Proportional to 23,630.34, 32,609.88 and 13,020

Step by Step Solution

1. Step 1: Write the proportion equation
   23,630.34 : 32,609.88 = 13,020 : x
2. Step 2: Convert to fraction form
   23,630.34/32,609.88 = 13,020/x
3. Step 3: Cross multiply
   23,630.34x = 32,609.88 × 13,020
4. Step 4: Simplify right side
   23,630.34x = 424,580,637.60
5. Step 5: Solve for x
   x = 424,580,637.60/23,630.34
6. Step 6: Final answer
   x = 17,967.61