Finding the Fourth Proportional to 22,422.69, 30,941.87 and 12,860.51

Step by Step Solution

1. Step 1: Write the proportion equation
   22,422.69 : 30,941.87 = 12,860.51 : x
2. Step 2: Convert to fraction form
   22,422.69/30,941.87 = 12,860.51/x
3. Step 3: Cross multiply
   22,422.69x = 30,941.87 × 12,860.51
4. Step 4: Simplify right side
   22,422.69x = 397,928,009.54
5. Step 5: Solve for x
   x = 397,928,009.54/22,422.69
6. Step 6: Final answer
   x = 17,746.67