Finding the Fourth Proportional to 23,632.15, 32,612.33 and 13,021.78

Step by Step Solution

1. Step 1: Write the proportion equation
   23,632.15 : 32,612.33 = 13,021.78 : x
2. Step 2: Convert to fraction form
   23,632.15/32,612.33 = 13,021.78/x
3. Step 3: Cross multiply
   23,632.15x = 32,612.33 × 13,021.78
4. Step 4: Simplify right side
   23,632.15x = 424,670,603.42
5. Step 5: Solve for x
   x = 424,670,603.42/23,632.15
6. Step 6: Final answer
   x = 17,970.04