Finding the Fourth Proportional to 30,796.56, 42,505.85 and 19,458.86

Step by Step Solution

1. Step 1: Write the proportion equation
   30,796.56 : 42,505.85 = 19,458.86 : x
2. Step 2: Convert to fraction form
   30,796.56/42,505.85 = 19,458.86/x
3. Step 3: Cross multiply
   30,796.56x = 42,505.85 × 19,458.86
4. Step 4: Simplify right side
   30,796.56x = 827,115,074.51
5. Step 5: Solve for x
   x = 827,115,074.51/30,796.56
6. Step 6: Final answer
   x = 26,857.39