Finding the Fourth Proportional to 12,835.36, 17,713.24 and 7,246.72

Step by Step Solution

1. Step 1: Write the proportion equation
   12,835.36 : 17,713.24 = 7,246.72 : x
2. Step 2: Convert to fraction form
   12,835.36/17,713.24 = 7,246.72/x
3. Step 3: Cross multiply
   12,835.36x = 17,713.24 × 7,246.72
4. Step 4: Simplify right side
   12,835.36x = 128,362,890.57
5. Step 5: Solve for x
   x = 128,362,890.57/12,835.36
6. Step 6: Final answer
   x = 10,000.72