Finding the Fourth Proportional to 12,945.87, 17,867.13 and 7,281.06

Step by Step Solution

1. Step 1: Write the proportion equation
   12,945.87 : 17,867.13 = 7,281.06 : x
2. Step 2: Convert to fraction form
   12,945.87/17,867.13 = 7,281.06/x
3. Step 3: Cross multiply
   12,945.87x = 17,867.13 × 7,281.06
4. Step 4: Simplify right side
   12,945.87x = 130,091,645.56
5. Step 5: Solve for x
   x = 130,091,645.56/12,945.87
6. Step 6: Final answer
   x = 10,048.89