Finding the Fourth Proportional to 12,826.72, 19,218.20 and 10,362.70

Step by Step Solution

1. Step 1: Write the proportion equation
   12,826.72 : 19,218.20 = 10,362.70 : x
2. Step 2: Convert to fraction form
   12,826.72/19,218.20 = 10,362.70/x
3. Step 3: Cross multiply
   12,826.72x = 19,218.20 × 10,362.70
4. Step 4: Simplify right side
   12,826.72x = 199,152,441.14
5. Step 5: Solve for x
   x = 199,152,441.14/12,826.72
6. Step 6: Final answer
   x = 15,526.37