Finding the Fourth Proportional to 10,905.98, 16,355.73 and 3,981.02

Step by Step Solution

1. Step 1: Write the proportion equation
   10,905.98 : 16,355.73 = 3,981.02 : x
2. Step 2: Convert to fraction form
   10,905.98/16,355.73 = 3,981.02/x
3. Step 3: Cross multiply
   10,905.98x = 16,355.73 × 3,981.02
4. Step 4: Simplify right side
   10,905.98x = 65,112,488.24
5. Step 5: Solve for x
   x = 65,112,488.24/10,905.98
6. Step 6: Final answer
   x = 5,970.35