Finding the Fourth Proportional to 9,428.52, 14,142.80 and 2,854.72

Step by Step Solution

1. Step 1: Write the proportion equation
   9,428.52 : 14,142.80 = 2,854.72 : x
2. Step 2: Convert to fraction form
   9,428.52/14,142.80 = 2,854.72/x
3. Step 3: Cross multiply
   9,428.52x = 14,142.80 × 2,854.72
4. Step 4: Simplify right side
   9,428.52x = 40,373,734.02
5. Step 5: Solve for x
   x = 40,373,734.02/9,428.52
6. Step 6: Final answer
   x = 4,282.09