Finding the Fourth Proportional to 6,980.34, 10,518.45 and 5,774.79

Step by Step Solution

1. Step 1: Write the proportion equation
   6,980.34 : 10,518.45 = 5,774.79 : x
2. Step 2: Convert to fraction form
   6,980.34/10,518.45 = 5,774.79/x
3. Step 3: Cross multiply
   6,980.34x = 10,518.45 × 5,774.79
4. Step 4: Simplify right side
   6,980.34x = 60,741,839.88
5. Step 5: Solve for x
   x = 60,741,839.88/6,980.34
6. Step 6: Final answer
   x = 8,701.85