Finding the Fourth Proportional to 12,422.69, 17,136.06 and 7,944.81

Step by Step Solution

1. Step 1: Write the proportion equation
   12,422.69 : 17,136.06 = 7,944.81 : x
2. Step 2: Convert to fraction form
   12,422.69/17,136.06 = 7,944.81/x
3. Step 3: Cross multiply
   12,422.69x = 17,136.06 × 7,944.81
4. Step 4: Simplify right side
   12,422.69x = 136,142,694.99
5. Step 5: Solve for x
   x = 136,142,694.99/12,422.69
6. Step 6: Final answer
   x = 10,959.19