Finding the Fourth Proportional to 28,449.23, 42,642.18 and 10,662.84

Step by Step Solution

1. Step 1: Write the proportion equation
   28,449.23 : 42,642.18 = 10,662.84 : x
2. Step 2: Convert to fraction form
   28,449.23/42,642.18 = 10,662.84/x
3. Step 3: Cross multiply
   28,449.23x = 42,642.18 × 10,662.84
4. Step 4: Simplify right side
   28,449.23x = 454,686,742.59
5. Step 5: Solve for x
   x = 454,686,742.59/28,449.23
6. Step 6: Final answer
   x = 15,982.39