Finding the Fourth Proportional to 30,982.61, 42,755.17 and 17,555.12

Step by Step Solution

1. Step 1: Write the proportion equation
   30,982.61 : 42,755.17 = 17,555.12 : x
2. Step 2: Convert to fraction form
   30,982.61/42,755.17 = 17,555.12/x
3. Step 3: Cross multiply
   30,982.61x = 42,755.17 × 17,555.12
4. Step 4: Simplify right side
   30,982.61x = 750,571,966.06
5. Step 5: Solve for x
   x = 750,571,966.06/30,982.61
6. Step 6: Final answer
   x = 24,225.59