Finding the Fourth Proportional to 11,128.86, 16,691.67 and 3,230.82

Step by Step Solution

1. Step 1: Write the proportion equation
   11,128.86 : 16,691.67 = 3,230.82 : x
2. Step 2: Convert to fraction form
   11,128.86/16,691.67 = 3,230.82/x
3. Step 3: Cross multiply
   11,128.86x = 16,691.67 × 3,230.82
4. Step 4: Simplify right side
   11,128.86x = 53,927,781.27
5. Step 5: Solve for x
   x = 53,927,781.27/11,128.86
6. Step 6: Final answer
   x = 4,845.76