Finding the Fourth Proportional to 9,042.86, 13,560.90 and 3,118.10

Step by Step Solution

1. Step 1: Write the proportion equation
   9,042.86 : 13,560.90 = 3,118.10 : x
2. Step 2: Convert to fraction form
   9,042.86/13,560.90 = 3,118.10/x
3. Step 3: Cross multiply
   9,042.86x = 13,560.90 × 3,118.10
4. Step 4: Simplify right side
   9,042.86x = 42,284,174.49
5. Step 5: Solve for x
   x = 42,284,174.49/9,042.86
6. Step 6: Final answer
   x = 4,675.98