Finding the Fourth Proportional to 23,631.59, 32,613.05 and 13,021.22

Step by Step Solution

1. Step 1: Write the proportion equation
   23,631.59 : 32,613.05 = 13,021.22 : x
2. Step 2: Convert to fraction form
   23,631.59/32,613.05 = 13,021.22/x
3. Step 3: Cross multiply
   23,631.59x = 32,613.05 × 13,021.22
4. Step 4: Simplify right side
   23,631.59x = 424,661,698.92
5. Step 5: Solve for x
   x = 424,661,698.92/23,631.59
6. Step 6: Final answer
   x = 17,970.09