Finding the Fourth Proportional to 13,158.27, 18,158.85 and 7,852.37

Step by Step Solution

1. Step 1: Write the proportion equation
   13,158.27 : 18,158.85 = 7,852.37 : x
2. Step 2: Convert to fraction form
   13,158.27/18,158.85 = 7,852.37/x
3. Step 3: Cross multiply
   13,158.27x = 18,158.85 × 7,852.37
4. Step 4: Simplify right side
   13,158.27x = 142,589,918.18
5. Step 5: Solve for x
   x = 142,589,918.18/13,158.27
6. Step 6: Final answer
   x = 10,836.52