Finding the Fourth Proportional to 12,613.50, 17,406.43 and 7,308.19

Step by Step Solution

1. Step 1: Write the proportion equation
   12,613.50 : 17,406.43 = 7,308.19 : x
2. Step 2: Convert to fraction form
   12,613.50/17,406.43 = 7,308.19/x
3. Step 3: Cross multiply
   12,613.50x = 17,406.43 × 7,308.19
4. Step 4: Simplify right side
   12,613.50x = 127,209,497.66
5. Step 5: Solve for x
   x = 127,209,497.66/12,613.50
6. Step 6: Final answer
   x = 10,085.19