Finding the Fourth Proportional to 28,255.14, 42,353.13 and 9,528.72

Step by Step Solution

1. Step 1: Write the proportion equation
   28,255.14 : 42,353.13 = 9,528.72 : x
2. Step 2: Convert to fraction form
   28,255.14/42,353.13 = 9,528.72/x
3. Step 3: Cross multiply
   28,255.14x = 42,353.13 × 9,528.72
4. Step 4: Simplify right side
   28,255.14x = 403,571,116.89
5. Step 5: Solve for x
   x = 403,571,116.89/28,255.14
6. Step 6: Final answer
   x = 14,283.10