Finding the Fourth Proportional to 28,662.74, 42,995.61 and 8,671.73

Step by Step Solution

1. Step 1: Write the proportion equation
   28,662.74 : 42,995.61 = 8,671.73 : x
2. Step 2: Convert to fraction form
   28,662.74/42,995.61 = 8,671.73/x
3. Step 3: Cross multiply
   28,662.74x = 42,995.61 × 8,671.73
4. Step 4: Simplify right side
   28,662.74x = 372,846,196.82
5. Step 5: Solve for x
   x = 372,846,196.82/28,662.74
6. Step 6: Final answer
   x = 13,008.04