Finding the Fourth Proportional to 8,079.12, 11,153.52 and 5,440.50

Step by Step Solution

1. Step 1: Write the proportion equation
   8,079.12 : 11,153.52 = 5,440.50 : x
2. Step 2: Convert to fraction form
   8,079.12/11,153.52 = 5,440.50/x
3. Step 3: Cross multiply
   8,079.12x = 11,153.52 × 5,440.50
4. Step 4: Simplify right side
   8,079.12x = 60,680,725.56
5. Step 5: Solve for x
   x = 60,680,725.56/8,079.12
6. Step 6: Final answer
   x = 7,510.81