Finding the Fourth Proportional to 9,418.98, 14,128.56 and 2,845.43

Step by Step Solution

1. Step 1: Write the proportion equation
   9,418.98 : 14,128.56 = 2,845.43 : x
2. Step 2: Convert to fraction form
   9,418.98/14,128.56 = 2,845.43/x
3. Step 3: Cross multiply
   9,418.98x = 14,128.56 × 2,845.43
4. Step 4: Simplify right side
   9,418.98x = 40,201,810.82
5. Step 5: Solve for x
   x = 40,201,810.82/9,418.98
6. Step 6: Final answer
   x = 4,268.17