Finding the Fourth Proportional to 12,152.80, 18,231.78 and 3,835.22

Step by Step Solution

1. Step 1: Write the proportion equation
   12,152.80 : 18,231.78 = 3,835.22 : x
2. Step 2: Convert to fraction form
   12,152.80/18,231.78 = 3,835.22/x
3. Step 3: Cross multiply
   12,152.80x = 18,231.78 × 3,835.22
4. Step 4: Simplify right side
   12,152.80x = 69,922,810.51
5. Step 5: Solve for x
   x = 69,922,810.51/12,152.80
6. Step 6: Final answer
   x = 5,753.64