Finding the Fourth Proportional to 30,131.56, 41,581.97 and 16,520.88

Step by Step Solution

1. Step 1: Write the proportion equation
   30,131.56 : 41,581.97 = 16,520.88 : x
2. Step 2: Convert to fraction form
   30,131.56/41,581.97 = 16,520.88/x
3. Step 3: Cross multiply
   30,131.56x = 41,581.97 × 16,520.88
4. Step 4: Simplify right side
   30,131.56x = 686,970,736.53
5. Step 5: Solve for x
   x = 686,970,736.53/30,131.56
6. Step 6: Final answer
   x = 22,799.04