Finding the Fourth Proportional to 13,155.20, 18,152.16 and 7,850.24

Step by Step Solution

1. Step 1: Write the proportion equation
   13,155.20 : 18,152.16 = 7,850.24 : x
2. Step 2: Convert to fraction form
   13,155.20/18,152.16 = 7,850.24/x
3. Step 3: Cross multiply
   13,155.20x = 18,152.16 × 7,850.24
4. Step 4: Simplify right side
   13,155.20x = 142,498,812.52
5. Step 5: Solve for x
   x = 142,498,812.52/13,155.20
6. Step 6: Final answer
   x = 10,832.13