Finding the Fourth Proportional to 31,613.16, 43,621.72 and 18,179.51

Step by Step Solution

1. Step 1: Write the proportion equation
   31,613.16 : 43,621.72 = 18,179.51 : x
2. Step 2: Convert to fraction form
   31,613.16/43,621.72 = 18,179.51/x
3. Step 3: Cross multiply
   31,613.16x = 43,621.72 × 18,179.51
4. Step 4: Simplify right side
   31,613.16x = 793,021,494.96
5. Step 5: Solve for x
   x = 793,021,494.96/31,613.16
6. Step 6: Final answer
   x = 25,085.17