Finding the Fourth Proportional to 12,796.50, 17,659.20 and 7,207.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,796.50 : 17,659.20 = 7,207.50 : x
2. Step 2: Convert to fraction form
   12,796.50/17,659.20 = 7,207.50/x
3. Step 3: Cross multiply
   12,796.50x = 17,659.20 × 7,207.50
4. Step 4: Simplify right side
   12,796.50x = 127,278,684
5. Step 5: Solve for x
   x = 127,278,684/12,796.50
6. Step 6: Final answer
   x = 9,946.37