Finding the Fourth Proportional to 23,015.09, 31,758.57 and 12,943.31

Step by Step Solution

1. Step 1: Write the proportion equation
   23,015.09 : 31,758.57 = 12,943.31 : x
2. Step 2: Convert to fraction form
   23,015.09/31,758.57 = 12,943.31/x
3. Step 3: Cross multiply
   23,015.09x = 31,758.57 × 12,943.31
4. Step 4: Simplify right side
   23,015.09x = 411,060,857.87
5. Step 5: Solve for x
   x = 411,060,857.87/23,015.09
6. Step 6: Final answer
   x = 17,860.49