Finding the Fourth Proportional to 30,799.98, 42,494.27 and 18,850.86

Step by Step Solution

1. Step 1: Write the proportion equation
   30,799.98 : 42,494.27 = 18,850.86 : x
2. Step 2: Convert to fraction form
   30,799.98/42,494.27 = 18,850.86/x
3. Step 3: Cross multiply
   30,799.98x = 42,494.27 × 18,850.86
4. Step 4: Simplify right side
   30,799.98x = 801,053,534.57
5. Step 5: Solve for x
   x = 801,053,534.57/30,799.98
6. Step 6: Final answer
   x = 26,008.25