Finding the Fourth Proportional to 28,065.42, 42,103.20 and 8,073.96

Step by Step Solution

1. Step 1: Write the proportion equation
   28,065.42 : 42,103.20 = 8,073.96 : x
2. Step 2: Convert to fraction form
   28,065.42/42,103.20 = 8,073.96/x
3. Step 3: Cross multiply
   28,065.42x = 42,103.20 × 8,073.96
4. Step 4: Simplify right side
   28,065.42x = 339,939,552.67
5. Step 5: Solve for x
   x = 339,939,552.67/28,065.42
6. Step 6: Final answer
   x = 12,112.40