Finding the Fourth Proportional to 11,518.89, 15,895.65 and 7,042.83

Step by Step Solution

1. Step 1: Write the proportion equation
   11,518.89 : 15,895.65 = 7,042.83 : x
2. Step 2: Convert to fraction form
   11,518.89/15,895.65 = 7,042.83/x
3. Step 3: Cross multiply
   11,518.89x = 15,895.65 × 7,042.83
4. Step 4: Simplify right side
   11,518.89x = 111,950,360.69
5. Step 5: Solve for x
   x = 111,950,360.69/11,518.89
6. Step 6: Final answer
   x = 9,718.85