Finding the Fourth Proportional to 39,510.72, 59,257.98 and 17,311.86

Step by Step Solution

1. Step 1: Write the proportion equation
   39,510.72 : 59,257.98 = 17,311.86 : x
2. Step 2: Convert to fraction form
   39,510.72/59,257.98 = 17,311.86/x
3. Step 3: Cross multiply
   39,510.72x = 59,257.98 × 17,311.86
4. Step 4: Simplify right side
   39,510.72x = 1,025,865,853.64
5. Step 5: Solve for x
   x = 1,025,865,853.64/39,510.72
6. Step 6: Final answer
   x = 25,964.24