Finding the Fourth Proportional to 13,052.28, 18,012.24 and 7,749.72

Step by Step Solution

1. Step 1: Write the proportion equation
   13,052.28 : 18,012.24 = 7,749.72 : x
2. Step 2: Convert to fraction form
   13,052.28/18,012.24 = 7,749.72/x
3. Step 3: Cross multiply
   13,052.28x = 18,012.24 × 7,749.72
4. Step 4: Simplify right side
   13,052.28x = 139,589,816.57
5. Step 5: Solve for x
   x = 139,589,816.57/13,052.28
6. Step 6: Final answer
   x = 10,694.67