Finding the Fourth Proportional to 30,641.34, 42,283.98 and 18,724.62

Step by Step Solution

1. Step 1: Write the proportion equation
   30,641.34 : 42,283.98 = 18,724.62 : x
2. Step 2: Convert to fraction form
   30,641.34/42,283.98 = 18,724.62/x
3. Step 3: Cross multiply
   30,641.34x = 42,283.98 × 18,724.62
4. Step 4: Simplify right side
   30,641.34x = 791,751,457.59
5. Step 5: Solve for x
   x = 791,751,457.59/30,641.34
6. Step 6: Final answer
   x = 25,839.32