Finding the Fourth Proportional to 12,834.63, 19,251.72 and 10,638.72

Step by Step Solution

1. Step 1: Write the proportion equation
   12,834.63 : 19,251.72 = 10,638.72 : x
2. Step 2: Convert to fraction form
   12,834.63/19,251.72 = 10,638.72/x
3. Step 3: Cross multiply
   12,834.63x = 19,251.72 × 10,638.72
4. Step 4: Simplify right side
   12,834.63x = 204,813,658.60
5. Step 5: Solve for x
   x = 204,813,658.60/12,834.63
6. Step 6: Final answer
   x = 15,957.89