Finding the Fourth Proportional to 11,007.08, 16,510.77 and 3,215.89

Step by Step Solution

1. Step 1: Write the proportion equation
   11,007.08 : 16,510.77 = 3,215.89 : x
2. Step 2: Convert to fraction form
   11,007.08/16,510.77 = 3,215.89/x
3. Step 3: Cross multiply
   11,007.08x = 16,510.77 × 3,215.89
4. Step 4: Simplify right side
   11,007.08x = 53,096,820.14
5. Step 5: Solve for x
   x = 53,096,820.14/11,007.08
6. Step 6: Final answer
   x = 4,823.88