Finding the Fourth Proportional to 12,613.82, 17,407.06 and 7,311.71

Step by Step Solution

1. Step 1: Write the proportion equation
   12,613.82 : 17,407.06 = 7,311.71 : x
2. Step 2: Convert to fraction form
   12,613.82/17,407.06 = 7,311.71/x
3. Step 3: Cross multiply
   12,613.82x = 17,407.06 × 7,311.71
4. Step 4: Simplify right side
   12,613.82x = 127,275,374.67
5. Step 5: Solve for x
   x = 127,275,374.67/12,613.82
6. Step 6: Final answer
   x = 10,090.15