Finding the Fourth Proportional to 23,145.39, 31,940.06 and 13,074.89

Step by Step Solution

1. Step 1: Write the proportion equation
   23,145.39 : 31,940.06 = 13,074.89 : x
2. Step 2: Convert to fraction form
   23,145.39/31,940.06 = 13,074.89/x
3. Step 3: Cross multiply
   23,145.39x = 31,940.06 × 13,074.89
4. Step 4: Simplify right side
   23,145.39x = 417,612,546.02
5. Step 5: Solve for x
   x = 417,612,546.02/23,145.39
6. Step 6: Final answer
   x = 18,043.01