Finding the Fourth Proportional to 12,613.89, 17,407.56 and 6,948.33

Step by Step Solution

1. Step 1: Write the proportion equation
   12,613.89 : 17,407.56 = 6,948.33 : x
2. Step 2: Convert to fraction form
   12,613.89/17,407.56 = 6,948.33/x
3. Step 3: Cross multiply
   12,613.89x = 17,407.56 × 6,948.33
4. Step 4: Simplify right side
   12,613.89x = 120,953,471.37
5. Step 5: Solve for x
   x = 120,953,471.37/12,613.89
6. Step 6: Final answer
   x = 9,588.91