Finding the Fourth Proportional to 22,417.76, 30,935.88 and 12,859.25

Step by Step Solution

1. Step 1: Write the proportion equation
   22,417.76 : 30,935.88 = 12,859.25 : x
2. Step 2: Convert to fraction form
   22,417.76/30,935.88 = 12,859.25/x
3. Step 3: Cross multiply
   22,417.76x = 30,935.88 × 12,859.25
4. Step 4: Simplify right side
   22,417.76x = 397,812,060.21
5. Step 5: Solve for x
   x = 397,812,060.21/22,417.76
6. Step 6: Final answer
   x = 17,745.40