Finding the Fourth Proportional to 11,067.78, 16,590.98 and 7,107.86

Step by Step Solution

1. Step 1: Write the proportion equation
   11,067.78 : 16,590.98 = 7,107.86 : x
2. Step 2: Convert to fraction form
   11,067.78/16,590.98 = 7,107.86/x
3. Step 3: Cross multiply
   11,067.78x = 16,590.98 × 7,107.86
4. Step 4: Simplify right side
   11,067.78x = 117,926,363.10
5. Step 5: Solve for x
   x = 117,926,363.10/11,067.78
6. Step 6: Final answer
   x = 10,654.92