Finding the Fourth Proportional to 30,940.88, 42,700.52 and 17,512.08

Step by Step Solution

1. Step 1: Write the proportion equation
   30,940.88 : 42,700.52 = 17,512.08 : x
2. Step 2: Convert to fraction form
   30,940.88/42,700.52 = 17,512.08/x
3. Step 3: Cross multiply
   30,940.88x = 42,700.52 × 17,512.08
4. Step 4: Simplify right side
   30,940.88x = 747,774,834.72
5. Step 5: Solve for x
   x = 747,774,834.72/30,940.88
6. Step 6: Final answer
   x = 24,167.86