Finding the Fourth Proportional to 12,690.06, 17,500.59 and 8,704.14

Step by Step Solution

1. Step 1: Write the proportion equation
   12,690.06 : 17,500.59 = 8,704.14 : x
2. Step 2: Convert to fraction form
   12,690.06/17,500.59 = 8,704.14/x
3. Step 3: Cross multiply
   12,690.06x = 17,500.59 × 8,704.14
4. Step 4: Simplify right side
   12,690.06x = 152,327,585.44
5. Step 5: Solve for x
   x = 152,327,585.44/12,690.06
6. Step 6: Final answer
   x = 12,003.69