Finding the Fourth Proportional to 31,150.69, 42,993.53 and 18,576.25

Step by Step Solution

1. Step 1: Write the proportion equation
   31,150.69 : 42,993.53 = 18,576.25 : x
2. Step 2: Convert to fraction form
   31,150.69/42,993.53 = 18,576.25/x
3. Step 3: Cross multiply
   31,150.69x = 42,993.53 × 18,576.25
4. Step 4: Simplify right side
   31,150.69x = 798,658,561.66
5. Step 5: Solve for x
   x = 798,658,561.66/31,150.69
6. Step 6: Final answer
   x = 25,638.55