Finding the Fourth Proportional to 30,873.83, 42,606.69 and 18,930.29

Step by Step Solution

1. Step 1: Write the proportion equation
   30,873.83 : 42,606.69 = 18,930.29 : x
2. Step 2: Convert to fraction form
   30,873.83/42,606.69 = 18,930.29/x
3. Step 3: Cross multiply
   30,873.83x = 42,606.69 × 18,930.29
4. Step 4: Simplify right side
   30,873.83x = 806,556,997.64
5. Step 5: Solve for x
   x = 806,556,997.64/30,873.83
6. Step 6: Final answer
   x = 26,124.29