Finding the Fourth Proportional to 30,957.84, 42,732.72 and 18,382.50

Step by Step Solution

1. Step 1: Write the proportion equation
   30,957.84 : 42,732.72 = 18,382.50 : x
2. Step 2: Convert to fraction form
   30,957.84/42,732.72 = 18,382.50/x
3. Step 3: Cross multiply
   30,957.84x = 42,732.72 × 18,382.50
4. Step 4: Simplify right side
   30,957.84x = 785,534,225.40
5. Step 5: Solve for x
   x = 785,534,225.40/30,957.84
6. Step 6: Final answer
   x = 25,374.32