Finding the Fourth Proportional to 13,256.52, 18,287.04 and 8,219.10

Step by Step Solution

1. Step 1: Write the proportion equation
   13,256.52 : 18,287.04 = 8,219.10 : x
2. Step 2: Convert to fraction form
   13,256.52/18,287.04 = 8,219.10/x
3. Step 3: Cross multiply
   13,256.52x = 18,287.04 × 8,219.10
4. Step 4: Simplify right side
   13,256.52x = 150,303,010.46
5. Step 5: Solve for x
   x = 150,303,010.46/13,256.52
6. Step 6: Final answer
   x = 11,338.04