Finding the Fourth Proportional to 28,568.10, 42,852.15 and 9,853.50

Step by Step Solution

1. Step 1: Write the proportion equation
   28,568.10 : 42,852.15 = 9,853.50 : x
2. Step 2: Convert to fraction form
   28,568.10/42,852.15 = 9,853.50/x
3. Step 3: Cross multiply
   28,568.10x = 42,852.15 × 9,853.50
4. Step 4: Simplify right side
   28,568.10x = 422,243,445.76
5. Step 5: Solve for x
   x = 422,243,445.76/28,568.10
6. Step 6: Final answer
   x = 14,780.25