Finding the Fourth Proportional to 23,123.91, 31,910.99 and 12,513.54

Step by Step Solution

1. Step 1: Write the proportion equation
   23,123.91 : 31,910.99 = 12,513.54 : x
2. Step 2: Convert to fraction form
   23,123.91/31,910.99 = 12,513.54/x
3. Step 3: Cross multiply
   23,123.91x = 31,910.99 × 12,513.54
4. Step 4: Simplify right side
   23,123.91x = 399,319,388.21
5. Step 5: Solve for x
   x = 399,319,388.21/23,123.91
6. Step 6: Final answer
   x = 17,268.68