Finding the Fourth Proportional to 12,826.59, 17,704.98 and 7,521.27

Step by Step Solution

1. Step 1: Write the proportion equation
   12,826.59 : 17,704.98 = 7,521.27 : x
2. Step 2: Convert to fraction form
   12,826.59/17,704.98 = 7,521.27/x
3. Step 3: Cross multiply
   12,826.59x = 17,704.98 × 7,521.27
4. Step 4: Simplify right side
   12,826.59x = 133,163,934.92
5. Step 5: Solve for x
   x = 133,163,934.92/12,826.59
6. Step 6: Final answer
   x = 10,381.87