Finding the Fourth Proportional to 28,182.69, 42,280.52 and 8,461.62

Step by Step Solution

1. Step 1: Write the proportion equation
   28,182.69 : 42,280.52 = 8,461.62 : x
2. Step 2: Convert to fraction form
   28,182.69/42,280.52 = 8,461.62/x
3. Step 3: Cross multiply
   28,182.69x = 42,280.52 × 8,461.62
4. Step 4: Simplify right side
   28,182.69x = 357,761,651.33
5. Step 5: Solve for x
   x = 357,761,651.33/28,182.69
6. Step 6: Final answer
   x = 12,694.38