Finding the Fourth Proportional to 28,065.80, 42,098.34 and 8,075.82

Step by Step Solution

1. Step 1: Write the proportion equation
   28,065.80 : 42,098.34 = 8,075.82 : x
2. Step 2: Convert to fraction form
   28,065.80/42,098.34 = 8,075.82/x
3. Step 3: Cross multiply
   28,065.80x = 42,098.34 × 8,075.82
4. Step 4: Simplify right side
   28,065.80x = 339,978,616.14
5. Step 5: Solve for x
   x = 339,978,616.14/28,065.80
6. Step 6: Final answer
   x = 12,113.63