Finding the Fourth Proportional to 12,824.66, 17,696.28 and 7,789.94

Step by Step Solution

1. Step 1: Write the proportion equation
   12,824.66 : 17,696.28 = 7,789.94 : x
2. Step 2: Convert to fraction form
   12,824.66/17,696.28 = 7,789.94/x
3. Step 3: Cross multiply
   12,824.66x = 17,696.28 × 7,789.94
4. Step 4: Simplify right side
   12,824.66x = 137,852,959.42
5. Step 5: Solve for x
   x = 137,852,959.42/12,824.66
6. Step 6: Final answer
   x = 10,749.05