Finding the Fourth Proportional to 31,315.50, 46,961.59 and 12,589.24

Step by Step Solution

1. Step 1: Write the proportion equation
   31,315.50 : 46,961.59 = 12,589.24 : x
2. Step 2: Convert to fraction form
   31,315.50/46,961.59 = 12,589.24/x
3. Step 3: Cross multiply
   31,315.50x = 46,961.59 × 12,589.24
4. Step 4: Simplify right side
   31,315.50x = 591,210,727.29
5. Step 5: Solve for x
   x = 591,210,727.29/31,315.50
6. Step 6: Final answer
   x = 18,879.17