Finding the Fourth Proportional to 10,877.05, 16,321.72 and 4,636.40

Step by Step Solution

1. Step 1: Write the proportion equation
   10,877.05 : 16,321.72 = 4,636.40 : x
2. Step 2: Convert to fraction form
   10,877.05/16,321.72 = 4,636.40/x
3. Step 3: Cross multiply
   10,877.05x = 16,321.72 × 4,636.40
4. Step 4: Simplify right side
   10,877.05x = 75,674,022.61
5. Step 5: Solve for x
   x = 75,674,022.61/10,877.05
6. Step 6: Final answer
   x = 6,957.22