Finding the Fourth Proportional to 23,687.07, 32,687.63 and 12,931.57

Step by Step Solution

1. Step 1: Write the proportion equation
   23,687.07 : 32,687.63 = 12,931.57 : x
2. Step 2: Convert to fraction form
   23,687.07/32,687.63 = 12,931.57/x
3. Step 3: Cross multiply
   23,687.07x = 32,687.63 × 12,931.57
4. Step 4: Simplify right side
   23,687.07x = 422,702,310.82
5. Step 5: Solve for x
   x = 422,702,310.82/23,687.07
6. Step 6: Final answer
   x = 17,845.28