Finding the Fourth Proportional to 11,010.16, 16,516.71 and 3,218.86

Step by Step Solution

1. Step 1: Write the proportion equation
   11,010.16 : 16,516.71 = 3,218.86 : x
2. Step 2: Convert to fraction form
   11,010.16/16,516.71 = 3,218.86/x
3. Step 3: Cross multiply
   11,010.16x = 16,516.71 × 3,218.86
4. Step 4: Simplify right side
   11,010.16x = 53,164,977.15
5. Step 5: Solve for x
   x = 53,164,977.15/11,010.16
6. Step 6: Final answer
   x = 4,828.72