Finding the Fourth Proportional to 30,970.98, 42,732.61 and 18,224.72

Step by Step Solution

1. Step 1: Write the proportion equation
   30,970.98 : 42,732.61 = 18,224.72 : x
2. Step 2: Convert to fraction form
   30,970.98/42,732.61 = 18,224.72/x
3. Step 3: Cross multiply
   30,970.98x = 42,732.61 × 18,224.72
4. Step 4: Simplify right side
   30,970.98x = 778,789,761.00
5. Step 5: Solve for x
   x = 778,789,761.00/30,970.98
6. Step 6: Final answer
   x = 25,145.79