Finding the Fourth Proportional to 10,891.62, 16,339.55 and 3,495.51

Step by Step Solution

1. Step 1: Write the proportion equation
   10,891.62 : 16,339.55 = 3,495.51 : x
2. Step 2: Convert to fraction form
   10,891.62/16,339.55 = 3,495.51/x
3. Step 3: Cross multiply
   10,891.62x = 16,339.55 × 3,495.51
4. Step 4: Simplify right side
   10,891.62x = 57,114,978.72
5. Step 5: Solve for x
   x = 57,114,978.72/10,891.62
6. Step 6: Final answer
   x = 5,243.94