Finding the Fourth Proportional to 28,112.16, 42,152.29 and 9,382.02

Step by Step Solution

1. Step 1: Write the proportion equation
   28,112.16 : 42,152.29 = 9,382.02 : x
2. Step 2: Convert to fraction form
   28,112.16/42,152.29 = 9,382.02/x
3. Step 3: Cross multiply
   28,112.16x = 42,152.29 × 9,382.02
4. Step 4: Simplify right side
   28,112.16x = 395,473,627.83
5. Step 5: Solve for x
   x = 395,473,627.83/28,112.16
6. Step 6: Final answer
   x = 14,067.71