Finding the Fourth Proportional to 8,100.81, 11,180.86 and 5,446.69

Step by Step Solution

1. Step 1: Write the proportion equation
   8,100.81 : 11,180.86 = 5,446.69 : x
2. Step 2: Convert to fraction form
   8,100.81/11,180.86 = 5,446.69/x
3. Step 3: Cross multiply
   8,100.81x = 11,180.86 × 5,446.69
4. Step 4: Simplify right side
   8,100.81x = 60,898,636.78
5. Step 5: Solve for x
   x = 60,898,636.78/8,100.81
6. Step 6: Final answer
   x = 7,517.60