Finding the Fourth Proportional to 30,876.83, 42,610.83 and 18,933.29

Step by Step Solution

1. Step 1: Write the proportion equation
   30,876.83 : 42,610.83 = 18,933.29 : x
2. Step 2: Convert to fraction form
   30,876.83/42,610.83 = 18,933.29/x
3. Step 3: Cross multiply
   30,876.83x = 42,610.83 × 18,933.29
4. Step 4: Simplify right side
   30,876.83x = 806,763,201.53
5. Step 5: Solve for x
   x = 806,763,201.53/30,876.83
6. Step 6: Final answer
   x = 26,128.43