Finding the Fourth Proportional to 23,161.16, 31,938.37 and 19,815.05

Step by Step Solution

1. Step 1: Write the proportion equation
   23,161.16 : 31,938.37 = 19,815.05 : x
2. Step 2: Convert to fraction form
   23,161.16/31,938.37 = 19,815.05/x
3. Step 3: Cross multiply
   23,161.16x = 31,938.37 × 19,815.05
4. Step 4: Simplify right side
   23,161.16x = 632,860,428.78
5. Step 5: Solve for x
   x = 632,860,428.78/23,161.16
6. Step 6: Final answer
   x = 27,324.21