Finding the Fourth Proportional to 12,997.35, 17,931.53 and 8,523.59

Step by Step Solution

1. Step 1: Write the proportion equation
   12,997.35 : 17,931.53 = 8,523.59 : x
2. Step 2: Convert to fraction form
   12,997.35/17,931.53 = 8,523.59/x
3. Step 3: Cross multiply
   12,997.35x = 17,931.53 × 8,523.59
4. Step 4: Simplify right side
   12,997.35x = 152,840,941.44
5. Step 5: Solve for x
   x = 152,840,941.44/12,997.35
6. Step 6: Final answer
   x = 11,759.39