Finding the Fourth Proportional to 31,081.24, 46,641.30 and 12,613.24

Step by Step Solution

1. Step 1: Write the proportion equation
   31,081.24 : 46,641.30 = 12,613.24 : x
2. Step 2: Convert to fraction form
   31,081.24/46,641.30 = 12,613.24/x
3. Step 3: Cross multiply
   31,081.24x = 46,641.30 × 12,613.24
4. Step 4: Simplify right side
   31,081.24x = 588,297,910.81
5. Step 5: Solve for x
   x = 588,297,910.81/31,081.24
6. Step 6: Final answer
   x = 18,927.75