Finding the Fourth Proportional to 12,704.25, 17,531.31 and 7,038.99

Step by Step Solution

1. Step 1: Write the proportion equation
   12,704.25 : 17,531.31 = 7,038.99 : x
2. Step 2: Convert to fraction form
   12,704.25/17,531.31 = 7,038.99/x
3. Step 3: Cross multiply
   12,704.25x = 17,531.31 × 7,038.99
4. Step 4: Simplify right side
   12,704.25x = 123,402,715.78
5. Step 5: Solve for x
   x = 123,402,715.78/12,704.25
6. Step 6: Final answer
   x = 9,713.50