Finding the Fourth Proportional to 12,613.67, 17,406.86 and 7,311.56

Step by Step Solution

1. Step 1: Write the proportion equation
   12,613.67 : 17,406.86 = 7,311.56 : x
2. Step 2: Convert to fraction form
   12,613.67/17,406.86 = 7,311.56/x
3. Step 3: Cross multiply
   12,613.67x = 17,406.86 × 7,311.56
4. Step 4: Simplify right side
   12,613.67x = 127,271,301.30
5. Step 5: Solve for x
   x = 127,271,301.30/12,613.67
6. Step 6: Final answer
   x = 10,089.95