Finding the Fourth Proportional to 12,834.50, 17,711.61 and 7,245.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,834.50 : 17,711.61 = 7,245.50 : x
2. Step 2: Convert to fraction form
   12,834.50/17,711.61 = 7,245.50/x
3. Step 3: Cross multiply
   12,834.50x = 17,711.61 × 7,245.50
4. Step 4: Simplify right side
   12,834.50x = 128,329,470.26
5. Step 5: Solve for x
   x = 128,329,470.26/12,834.50
6. Step 6: Final answer
   x = 9,998.79