Finding the Fourth Proportional to 23,046.99, 31,808.73 and 13,355

Step by Step Solution

1. Step 1: Write the proportion equation
   23,046.99 : 31,808.73 = 13,355 : x
2. Step 2: Convert to fraction form
   23,046.99/31,808.73 = 13,355/x
3. Step 3: Cross multiply
   23,046.99x = 31,808.73 × 13,355
4. Step 4: Simplify right side
   23,046.99x = 424,805,589.15
5. Step 5: Solve for x
   x = 424,805,589.15/23,046.99
6. Step 6: Final answer
   x = 18,432.15