Finding the Fourth Proportional to 23,123.81, 31,910.86 and 12,513.52

Step by Step Solution

1. Step 1: Write the proportion equation
   23,123.81 : 31,910.86 = 12,513.52 : x
2. Step 2: Convert to fraction form
   23,123.81/31,910.86 = 12,513.52/x
3. Step 3: Cross multiply
   23,123.81x = 31,910.86 × 12,513.52
4. Step 4: Simplify right side
   23,123.81x = 399,317,240.36
5. Step 5: Solve for x
   x = 399,317,240.36/23,123.81
6. Step 6: Final answer
   x = 17,268.66