Finding the Fourth Proportional to 30,914.91, 42,664.22 and 19,580.25

Step by Step Solution

1. Step 1: Write the proportion equation
   30,914.91 : 42,664.22 = 19,580.25 : x
2. Step 2: Convert to fraction form
   30,914.91/42,664.22 = 19,580.25/x
3. Step 3: Cross multiply
   30,914.91x = 42,664.22 × 19,580.25
4. Step 4: Simplify right side
   30,914.91x = 835,376,093.66
5. Step 5: Solve for x
   x = 835,376,093.66/30,914.91
6. Step 6: Final answer
   x = 27,021.79