Finding the Fourth Proportional to 13,132.56, 18,120.72 and 7,827.24

Step by Step Solution

1. Step 1: Write the proportion equation
   13,132.56 : 18,120.72 = 7,827.24 : x
2. Step 2: Convert to fraction form
   13,132.56/18,120.72 = 7,827.24/x
3. Step 3: Cross multiply
   13,132.56x = 18,120.72 × 7,827.24
4. Step 4: Simplify right side
   13,132.56x = 141,835,224.41
5. Step 5: Solve for x
   x = 141,835,224.41/13,132.56
6. Step 6: Final answer
   x = 10,800.27