Finding the Fourth Proportional to 13,883.38, 20,826.69 and 7,309.42

Step by Step Solution

1. Step 1: Write the proportion equation
   13,883.38 : 20,826.69 = 7,309.42 : x
2. Step 2: Convert to fraction form
   13,883.38/20,826.69 = 7,309.42/x
3. Step 3: Cross multiply
   13,883.38x = 20,826.69 × 7,309.42
4. Step 4: Simplify right side
   13,883.38x = 152,231,024.42
5. Step 5: Solve for x
   x = 152,231,024.42/13,883.38
6. Step 6: Final answer
   x = 10,964.98