Finding the Fourth Proportional to 23,081.63, 31,852.64 and 13,145.63

Step by Step Solution

1. Step 1: Write the proportion equation
   23,081.63 : 31,852.64 = 13,145.63 : x
2. Step 2: Convert to fraction form
   23,081.63/31,852.64 = 13,145.63/x
3. Step 3: Cross multiply
   23,081.63x = 31,852.64 × 13,145.63
4. Step 4: Simplify right side
   23,081.63x = 418,722,893.56
5. Step 5: Solve for x
   x = 418,722,893.56/23,081.63
6. Step 6: Final answer
   x = 18,140.96