Finding the Fourth Proportional to 9,899.42, 14,849.39 and 2,879.15

Step by Step Solution

1. Step 1: Write the proportion equation
   9,899.42 : 14,849.39 = 2,879.15 : x
2. Step 2: Convert to fraction form
   9,899.42/14,849.39 = 2,879.15/x
3. Step 3: Cross multiply
   9,899.42x = 14,849.39 × 2,879.15
4. Step 4: Simplify right side
   9,899.42x = 42,753,554.17
5. Step 5: Solve for x
   x = 42,753,554.17/9,899.42
6. Step 6: Final answer
   x = 4,318.80