Finding the Fourth Proportional to 10,994.49, 16,481.88 and 3,972.86

Step by Step Solution

1. Step 1: Write the proportion equation
   10,994.49 : 16,481.88 = 3,972.86 : x
2. Step 2: Convert to fraction form
   10,994.49/16,481.88 = 3,972.86/x
3. Step 3: Cross multiply
   10,994.49x = 16,481.88 × 3,972.86
4. Step 4: Simplify right side
   10,994.49x = 65,480,201.78
5. Step 5: Solve for x
   x = 65,480,201.78/10,994.49
6. Step 6: Final answer
   x = 5,955.73