Finding the Fourth Proportional to 12,613.64, 17,406.82 and 7,311.53

Step by Step Solution

1. Step 1: Write the proportion equation
   12,613.64 : 17,406.82 = 7,311.53 : x
2. Step 2: Convert to fraction form
   12,613.64/17,406.82 = 7,311.53/x
3. Step 3: Cross multiply
   12,613.64x = 17,406.82 × 7,311.53
4. Step 4: Simplify right side
   12,613.64x = 127,270,559.85
5. Step 5: Solve for x
   x = 127,270,559.85/12,613.64
6. Step 6: Final answer
   x = 10,089.91