Finding the Fourth Proportional to 17,056.72, 25,593.36 and 12,867.31

Step by Step Solution

1. Step 1: Write the proportion equation
   17,056.72 : 25,593.36 = 12,867.31 : x
2. Step 2: Convert to fraction form
   17,056.72/25,593.36 = 12,867.31/x
3. Step 3: Cross multiply
   17,056.72x = 25,593.36 × 12,867.31
4. Step 4: Simplify right side
   17,056.72x = 329,317,697.06
5. Step 5: Solve for x
   x = 329,317,697.06/17,056.72
6. Step 6: Final answer
   x = 19,307.21