Finding the Fourth Proportional to 10,938.91, 16,409.98 and 3,540.91

Step by Step Solution

1. Step 1: Write the proportion equation
   10,938.91 : 16,409.98 = 3,540.91 : x
2. Step 2: Convert to fraction form
   10,938.91/16,409.98 = 3,540.91/x
3. Step 3: Cross multiply
   10,938.91x = 16,409.98 × 3,540.91
4. Step 4: Simplify right side
   10,938.91x = 58,106,262.28
5. Step 5: Solve for x
   x = 58,106,262.28/10,938.91
6. Step 6: Final answer
   x = 5,311.89