Finding the Fourth Proportional to 12,618.81, 17,417.02 and 7,316.68

Step by Step Solution

1. Step 1: Write the proportion equation
   12,618.81 : 17,417.02 = 7,316.68 : x
2. Step 2: Convert to fraction form
   12,618.81/17,417.02 = 7,316.68/x
3. Step 3: Cross multiply
   12,618.81x = 17,417.02 × 7,316.68
4. Step 4: Simplify right side
   12,618.81x = 127,434,761.89
5. Step 5: Solve for x
   x = 127,434,761.89/12,618.81
6. Step 6: Final answer
   x = 10,098.79