Finding the Fourth Proportional to 23,145.96, 31,940.82 and 13,075.32

Step by Step Solution

1. Step 1: Write the proportion equation
   23,145.96 : 31,940.82 = 13,075.32 : x
2. Step 2: Convert to fraction form
   23,145.96/31,940.82 = 13,075.32/x
3. Step 3: Cross multiply
   23,145.96x = 31,940.82 × 13,075.32
4. Step 4: Simplify right side
   23,145.96x = 417,636,442.56
5. Step 5: Solve for x
   x = 417,636,442.56/23,145.96
6. Step 6: Final answer
   x = 18,043.60