Finding the Fourth Proportional to 28,017.86, 42,028.50 and 9,044.42

Step by Step Solution

1. Step 1: Write the proportion equation
   28,017.86 : 42,028.50 = 9,044.42 : x
2. Step 2: Convert to fraction form
   28,017.86/42,028.50 = 9,044.42/x
3. Step 3: Cross multiply
   28,017.86x = 42,028.50 × 9,044.42
4. Step 4: Simplify right side
   28,017.86x = 380,123,405.97
5. Step 5: Solve for x
   x = 380,123,405.97/28,017.86
6. Step 6: Final answer
   x = 13,567.18