Finding the Fourth Proportional to 23,767.78, 32,801.20 and 13,158.10

Step by Step Solution

1. Step 1: Write the proportion equation
   23,767.78 : 32,801.20 = 13,158.10 : x
2. Step 2: Convert to fraction form
   23,767.78/32,801.20 = 13,158.10/x
3. Step 3: Cross multiply
   23,767.78x = 32,801.20 × 13,158.10
4. Step 4: Simplify right side
   23,767.78x = 431,601,367.33
5. Step 5: Solve for x
   x = 431,601,367.33/23,767.78
6. Step 6: Final answer
   x = 18,159.10