Finding the Fourth Proportional to 19,222.72, 26,527.40 and 10,390.72

Step by Step Solution

1. Step 1: Write the proportion equation
   19,222.72 : 26,527.40 = 10,390.72 : x
2. Step 2: Convert to fraction form
   19,222.72/26,527.40 = 10,390.72/x
3. Step 3: Cross multiply
   19,222.72x = 26,527.40 × 10,390.72
4. Step 4: Simplify right side
   19,222.72x = 275,638,785.73
5. Step 5: Solve for x
   x = 275,638,785.73/19,222.72
6. Step 6: Final answer
   x = 14,339.22