Finding the Fourth Proportional to 23,123.94, 31,910.82 and 12,513.36

Step by Step Solution

1. Step 1: Write the proportion equation
   23,123.94 : 31,910.82 = 12,513.36 : x
2. Step 2: Convert to fraction form
   23,123.94/31,910.82 = 12,513.36/x
3. Step 3: Cross multiply
   23,123.94x = 31,910.82 × 12,513.36
4. Step 4: Simplify right side
   23,123.94x = 399,311,578.56
5. Step 5: Solve for x
   x = 399,311,578.56/23,123.94
6. Step 6: Final answer
   x = 17,268.32