Finding the Fourth Proportional to 23,123.97, 31,911.03 and 12,513.60

Step by Step Solution

1. Step 1: Write the proportion equation
   23,123.97 : 31,911.03 = 12,513.60 : x
2. Step 2: Convert to fraction form
   23,123.97/31,911.03 = 12,513.60/x
3. Step 3: Cross multiply
   23,123.97x = 31,911.03 × 12,513.60
4. Step 4: Simplify right side
   23,123.97x = 399,321,865.01
5. Step 5: Solve for x
   x = 399,321,865.01/23,123.97
6. Step 6: Final answer
   x = 17,268.74