Finding the Fourth Proportional to 28,309.01, 42,458.72 and 8,582.81

Step by Step Solution

1. Step 1: Write the proportion equation
   28,309.01 : 42,458.72 = 8,582.81 : x
2. Step 2: Convert to fraction form
   28,309.01/42,458.72 = 8,582.81/x
3. Step 3: Cross multiply
   28,309.01x = 42,458.72 × 8,582.81
4. Step 4: Simplify right side
   28,309.01x = 364,414,871.40
5. Step 5: Solve for x
   x = 364,414,871.40/28,309.01
6. Step 6: Final answer
   x = 12,872.75