Finding the Fourth Proportional to 12,704.38, 17,531.56 and 7,039.01

Step by Step Solution

1. Step 1: Write the proportion equation
   12,704.38 : 17,531.56 = 7,039.01 : x
2. Step 2: Convert to fraction form
   12,704.38/17,531.56 = 7,039.01/x
3. Step 3: Cross multiply
   12,704.38x = 17,531.56 × 7,039.01
4. Step 4: Simplify right side
   12,704.38x = 123,404,826.16
5. Step 5: Solve for x
   x = 123,404,826.16/12,704.38
6. Step 6: Final answer
   x = 9,713.57