Finding the Fourth Proportional to 10,880.80, 16,321.34 and 3,089.61

Step by Step Solution

1. Step 1: Write the proportion equation
   10,880.80 : 16,321.34 = 3,089.61 : x
2. Step 2: Convert to fraction form
   10,880.80/16,321.34 = 3,089.61/x
3. Step 3: Cross multiply
   10,880.80x = 16,321.34 × 3,089.61
4. Step 4: Simplify right side
   10,880.80x = 50,426,583.00
5. Step 5: Solve for x
   x = 50,426,583.00/10,880.80
6. Step 6: Final answer
   x = 4,634.46