Finding the Fourth Proportional to 28,322.82, 42,481.48 and 8,601.55

Step by Step Solution

1. Step 1: Write the proportion equation
   28,322.82 : 42,481.48 = 8,601.55 : x
2. Step 2: Convert to fraction form
   28,322.82/42,481.48 = 8,601.55/x
3. Step 3: Cross multiply
   28,322.82x = 42,481.48 × 8,601.55
4. Step 4: Simplify right side
   28,322.82x = 365,406,574.29
5. Step 5: Solve for x
   x = 365,406,574.29/28,322.82
6. Step 6: Final answer
   x = 12,901.49