Finding the Fourth Proportional to 13,002.72, 17,945.28 and 12,594.48

Step by Step Solution

1. Step 1: Write the proportion equation
   13,002.72 : 17,945.28 = 12,594.48 : x
2. Step 2: Convert to fraction form
   13,002.72/17,945.28 = 12,594.48/x
3. Step 3: Cross multiply
   13,002.72x = 17,945.28 × 12,594.48
4. Step 4: Simplify right side
   13,002.72x = 226,011,470.05
5. Step 5: Solve for x
   x = 226,011,470.05/13,002.72
6. Step 6: Final answer
   x = 17,381.86