Finding the Fourth Proportional to 10,902.52, 16,356.20 and 3,977

Step by Step Solution

1. Step 1: Write the proportion equation
   10,902.52 : 16,356.20 = 3,977 : x
2. Step 2: Convert to fraction form
   10,902.52/16,356.20 = 3,977/x
3. Step 3: Cross multiply
   10,902.52x = 16,356.20 × 3,977
4. Step 4: Simplify right side
   10,902.52x = 65,048,607.40
5. Step 5: Solve for x
   x = 65,048,607.40/10,902.52
6. Step 6: Final answer
   x = 5,966.38