Finding the Fourth Proportional to 10,899.52, 16,356.57 and 3,974.02

Step by Step Solution

1. Step 1: Write the proportion equation
   10,899.52 : 16,356.57 = 3,974.02 : x
2. Step 2: Convert to fraction form
   10,899.52/16,356.57 = 3,974.02/x
3. Step 3: Cross multiply
   10,899.52x = 16,356.57 × 3,974.02
4. Step 4: Simplify right side
   10,899.52x = 65,001,336.31
5. Step 5: Solve for x
   x = 65,001,336.31/10,899.52
6. Step 6: Final answer
   x = 5,963.69