Finding the Fourth Proportional to 11,898.54, 16,418.82 and 7,117.53

Step by Step Solution

1. Step 1: Write the proportion equation
   11,898.54 : 16,418.82 = 7,117.53 : x
2. Step 2: Convert to fraction form
   11,898.54/16,418.82 = 7,117.53/x
3. Step 3: Cross multiply
   11,898.54x = 16,418.82 × 7,117.53
4. Step 4: Simplify right side
   11,898.54x = 116,861,443.91
5. Step 5: Solve for x
   x = 116,861,443.91/11,898.54
6. Step 6: Final answer
   x = 9,821.49