Finding the Fourth Proportional to 9,870.29, 14,805.63 and 2,850.83

Step by Step Solution

1. Step 1: Write the proportion equation
   9,870.29 : 14,805.63 = 2,850.83 : x
2. Step 2: Convert to fraction form
   9,870.29/14,805.63 = 2,850.83/x
3. Step 3: Cross multiply
   9,870.29x = 14,805.63 × 2,850.83
4. Step 4: Simplify right side
   9,870.29x = 42,208,260.14
5. Step 5: Solve for x
   x = 42,208,260.14/9,870.29
6. Step 6: Final answer
   x = 4,276.30