Finding the Fourth Proportional to 30,940.72, 42,687.84 and 17,510.56

Step by Step Solution

1. Step 1: Write the proportion equation
   30,940.72 : 42,687.84 = 17,510.56 : x
2. Step 2: Convert to fraction form
   30,940.72/42,687.84 = 17,510.56/x
3. Step 3: Cross multiply
   30,940.72x = 42,687.84 × 17,510.56
4. Step 4: Simplify right side
   30,940.72x = 747,487,983.59
5. Step 5: Solve for x
   x = 747,487,983.59/30,940.72
6. Step 6: Final answer
   x = 24,158.71