Finding the Fourth Proportional to 28,142.33, 42,192.43 and 9,411.48

Step by Step Solution

1. Step 1: Write the proportion equation
   28,142.33 : 42,192.43 = 9,411.48 : x
2. Step 2: Convert to fraction form
   28,142.33/42,192.43 = 9,411.48/x
3. Step 3: Cross multiply
   28,142.33x = 42,192.43 × 9,411.48
4. Step 4: Simplify right side
   28,142.33x = 397,093,187.57
5. Step 5: Solve for x
   x = 397,093,187.57/28,142.33
6. Step 6: Final answer
   x = 14,110.18