Finding the Fourth Proportional to 28,048.50, 42,072.42 and 8,058.48

Step by Step Solution

1. Step 1: Write the proportion equation
   28,048.50 : 42,072.42 = 8,058.48 : x
2. Step 2: Convert to fraction form
   28,048.50/42,072.42 = 8,058.48/x
3. Step 3: Cross multiply
   28,048.50x = 42,072.42 × 8,058.48
4. Step 4: Simplify right side
   28,048.50x = 339,039,755.12
5. Step 5: Solve for x
   x = 339,039,755.12/28,048.50
6. Step 6: Final answer
   x = 12,087.63