Finding the Fourth Proportional to 10,919.04, 16,369.92 and 10,905.60

Step by Step Solution

1. Step 1: Write the proportion equation
   10,919.04 : 16,369.92 = 10,905.60 : x
2. Step 2: Convert to fraction form
   10,919.04/16,369.92 = 10,905.60/x
3. Step 3: Cross multiply
   10,919.04x = 16,369.92 × 10,905.60
4. Step 4: Simplify right side
   10,919.04x = 178,523,799.55
5. Step 5: Solve for x
   x = 178,523,799.55/10,919.04
6. Step 6: Final answer
   x = 16,349.77