Finding the Fourth Proportional to 12,836.18, 17,715.12 and 7,799.24

Step by Step Solution

1. Step 1: Write the proportion equation
   12,836.18 : 17,715.12 = 7,799.24 : x
2. Step 2: Convert to fraction form
   12,836.18/17,715.12 = 7,799.24/x
3. Step 3: Cross multiply
   12,836.18x = 17,715.12 × 7,799.24
4. Step 4: Simplify right side
   12,836.18x = 138,164,472.51
5. Step 5: Solve for x
   x = 138,164,472.51/12,836.18
6. Step 6: Final answer
   x = 10,763.68