Finding the Fourth Proportional to 22,725.32, 31,350.82 and 13,289.72

Step by Step Solution

1. Step 1: Write the proportion equation
   22,725.32 : 31,350.82 = 13,289.72 : x
2. Step 2: Convert to fraction form
   22,725.32/31,350.82 = 13,289.72/x
3. Step 3: Cross multiply
   22,725.32x = 31,350.82 × 13,289.72
4. Step 4: Simplify right side
   22,725.32x = 416,643,619.57
5. Step 5: Solve for x
   x = 416,643,619.57/22,725.32
6. Step 6: Final answer
   x = 18,333.89