Finding the Fourth Proportional to 5,411.63, 8,118.05 and 2,491.98

Step by Step Solution

1. Step 1: Write the proportion equation
   5,411.63 : 8,118.05 = 2,491.98 : x
2. Step 2: Convert to fraction form
   5,411.63/8,118.05 = 2,491.98/x
3. Step 3: Cross multiply
   5,411.63x = 8,118.05 × 2,491.98
4. Step 4: Simplify right side
   5,411.63x = 20,230,005.78
5. Step 5: Solve for x
   x = 20,230,005.78/5,411.63
6. Step 6: Final answer
   x = 3,738.25