Finding the Fourth Proportional to 12,704.72, 17,532.28 and 7,039.44

Step by Step Solution

1. Step 1: Write the proportion equation
   12,704.72 : 17,532.28 = 7,039.44 : x
2. Step 2: Convert to fraction form
   12,704.72/17,532.28 = 7,039.44/x
3. Step 3: Cross multiply
   12,704.72x = 17,532.28 × 7,039.44
4. Step 4: Simplify right side
   12,704.72x = 123,417,501.04
5. Step 5: Solve for x
   x = 123,417,501.04/12,704.72
6. Step 6: Final answer
   x = 9,714.31