Finding the Fourth Proportional to 6,962.80, 10,440.24 and 5,380.96

Step by Step Solution

1. Step 1: Write the proportion equation
   6,962.80 : 10,440.24 = 5,380.96 : x
2. Step 2: Convert to fraction form
   6,962.80/10,440.24 = 5,380.96/x
3. Step 3: Cross multiply
   6,962.80x = 10,440.24 × 5,380.96
4. Step 4: Simplify right side
   6,962.80x = 56,178,513.83
5. Step 5: Solve for x
   x = 56,178,513.83/6,962.80
6. Step 6: Final answer
   x = 8,068.38