Finding the Fourth Proportional to 10,916.62, 16,378.17 and 5,076.70

Step by Step Solution

1. Step 1: Write the proportion equation
   10,916.62 : 16,378.17 = 5,076.70 : x
2. Step 2: Convert to fraction form
   10,916.62/16,378.17 = 5,076.70/x
3. Step 3: Cross multiply
   10,916.62x = 16,378.17 × 5,076.70
4. Step 4: Simplify right side
   10,916.62x = 83,147,055.64
5. Step 5: Solve for x
   x = 83,147,055.64/10,916.62
6. Step 6: Final answer
   x = 7,616.56