Finding the Fourth Proportional to 13,298.48, 18,359.41 and 8,828.34

Step by Step Solution

1. Step 1: Write the proportion equation
   13,298.48 : 18,359.41 = 8,828.34 : x
2. Step 2: Convert to fraction form
   13,298.48/18,359.41 = 8,828.34/x
3. Step 3: Cross multiply
   13,298.48x = 18,359.41 × 8,828.34
4. Step 4: Simplify right side
   13,298.48x = 162,083,142.59
5. Step 5: Solve for x
   x = 162,083,142.59/13,298.48
6. Step 6: Final answer
   x = 12,188.10