Finding the Fourth Proportional to 11,081.80, 15,298.53 and 8,558.25

Step by Step Solution

1. Step 1: Write the proportion equation
   11,081.80 : 15,298.53 = 8,558.25 : x
2. Step 2: Convert to fraction form
   11,081.80/15,298.53 = 8,558.25/x
3. Step 3: Cross multiply
   11,081.80x = 15,298.53 × 8,558.25
4. Step 4: Simplify right side
   11,081.80x = 130,928,644.37
5. Step 5: Solve for x
   x = 130,928,644.37/11,081.80
6. Step 6: Final answer
   x = 11,814.75