Finding the Fourth Proportional to 23,168.24, 31,948.72 and 20,607.90

Step by Step Solution

1. Step 1: Write the proportion equation
   23,168.24 : 31,948.72 = 20,607.90 : x
2. Step 2: Convert to fraction form
   23,168.24/31,948.72 = 20,607.90/x
3. Step 3: Cross multiply
   23,168.24x = 31,948.72 × 20,607.90
4. Step 4: Simplify right side
   23,168.24x = 658,396,026.89
5. Step 5: Solve for x
   x = 658,396,026.89/23,168.24
6. Step 6: Final answer
   x = 28,418.04