Finding the Fourth Proportional to 23,496.72, 32,425.47 and 12,886.57

Step by Step Solution

1. Step 1: Write the proportion equation
   23,496.72 : 32,425.47 = 12,886.57 : x
2. Step 2: Convert to fraction form
   23,496.72/32,425.47 = 12,886.57/x
3. Step 3: Cross multiply
   23,496.72x = 32,425.47 × 12,886.57
4. Step 4: Simplify right side
   23,496.72x = 417,853,088.94
5. Step 5: Solve for x
   x = 417,853,088.94/23,496.72
6. Step 6: Final answer
   x = 17,783.47