Finding the Fourth Proportional to 12,810.34, 17,678.36 and 7,433.86

Step by Step Solution

1. Step 1: Write the proportion equation
   12,810.34 : 17,678.36 = 7,433.86 : x
2. Step 2: Convert to fraction form
   12,810.34/17,678.36 = 7,433.86/x
3. Step 3: Cross multiply
   12,810.34x = 17,678.36 × 7,433.86
4. Step 4: Simplify right side
   12,810.34x = 131,418,453.27
5. Step 5: Solve for x
   x = 131,418,453.27/12,810.34
6. Step 6: Final answer
   x = 10,258.78