Finding the Fourth Proportional to 22,265.88, 30,725.10 and 12,705.72

Step by Step Solution

1. Step 1: Write the proportion equation
   22,265.88 : 30,725.10 = 12,705.72 : x
2. Step 2: Convert to fraction form
   22,265.88/30,725.10 = 12,705.72/x
3. Step 3: Cross multiply
   22,265.88x = 30,725.10 × 12,705.72
4. Step 4: Simplify right side
   22,265.88x = 390,384,517.57
5. Step 5: Solve for x
   x = 390,384,517.57/22,265.88
6. Step 6: Final answer
   x = 17,532.86