Finding the Fourth Proportional to 12,613.06, 17,405.86 and 6,947.69

Step by Step Solution

1. Step 1: Write the proportion equation
   12,613.06 : 17,405.86 = 6,947.69 : x
2. Step 2: Convert to fraction form
   12,613.06/17,405.86 = 6,947.69/x
3. Step 3: Cross multiply
   12,613.06x = 17,405.86 × 6,947.69
4. Step 4: Simplify right side
   12,613.06x = 120,930,484.72
5. Step 5: Solve for x
   x = 120,930,484.72/12,613.06
6. Step 6: Final answer
   x = 9,587.72