Finding the Fourth Proportional to 11,100.97, 16,651.34 and 2,780.92

Step by Step Solution

1. Step 1: Write the proportion equation
   11,100.97 : 16,651.34 = 2,780.92 : x
2. Step 2: Convert to fraction form
   11,100.97/16,651.34 = 2,780.92/x
3. Step 3: Cross multiply
   11,100.97x = 16,651.34 × 2,780.92
4. Step 4: Simplify right side
   11,100.97x = 46,306,044.43
5. Step 5: Solve for x
   x = 46,306,044.43/11,100.97
6. Step 6: Final answer
   x = 4,171.35