Finding the Fourth Proportional to 23,632.21, 32,612.52 and 13,021.60

Step by Step Solution

1. Step 1: Write the proportion equation
   23,632.21 : 32,612.52 = 13,021.60 : x
2. Step 2: Convert to fraction form
   23,632.21/32,612.52 = 13,021.60/x
3. Step 3: Cross multiply
   23,632.21x = 32,612.52 × 13,021.60
4. Step 4: Simplify right side
   23,632.21x = 424,667,190.43
5. Step 5: Solve for x
   x = 424,667,190.43/23,632.21
6. Step 6: Final answer
   x = 17,969.85