Finding the Fourth Proportional to 10,891.86, 16,329.84 and 3,492.12

Step by Step Solution

1. Step 1: Write the proportion equation
   10,891.86 : 16,329.84 = 3,492.12 : x
2. Step 2: Convert to fraction form
   10,891.86/16,329.84 = 3,492.12/x
3. Step 3: Cross multiply
   10,891.86x = 16,329.84 × 3,492.12
4. Step 4: Simplify right side
   10,891.86x = 57,025,760.86
5. Step 5: Solve for x
   x = 57,025,760.86/10,891.86
6. Step 6: Final answer
   x = 5,235.63