Finding the Fourth Proportional to 10,978.73, 16,458.00 and 3,957.02

Step by Step Solution

1. Step 1: Write the proportion equation
   10,978.73 : 16,458.00 = 3,957.02 : x
2. Step 2: Convert to fraction form
   10,978.73/16,458.00 = 3,957.02/x
3. Step 3: Cross multiply
   10,978.73x = 16,458.00 × 3,957.02
4. Step 4: Simplify right side
   10,978.73x = 65,124,714.58
5. Step 5: Solve for x
   x = 65,124,714.58/10,978.73
6. Step 6: Final answer
   x = 5,931.90