Finding the Fourth Proportional to 30,771.69, 42,443.82 and 18,840.93

Step by Step Solution

1. Step 1: Write the proportion equation
   30,771.69 : 42,443.82 = 18,840.93 : x
2. Step 2: Convert to fraction form
   30,771.69/42,443.82 = 18,840.93/x
3. Step 3: Cross multiply
   30,771.69x = 42,443.82 × 18,840.93
4. Step 4: Simplify right side
   30,771.69x = 799,681,041.55
5. Step 5: Solve for x
   x = 799,681,041.55/30,771.69
6. Step 6: Final answer
   x = 25,987.56