Finding the Fourth Proportional to 9,109.38, 13,588.59 and 8,840.82

Step by Step Solution

1. Step 1: Write the proportion equation
   9,109.38 : 13,588.59 = 8,840.82 : x
2. Step 2: Convert to fraction form
   9,109.38/13,588.59 = 8,840.82/x
3. Step 3: Cross multiply
   9,109.38x = 13,588.59 × 8,840.82
4. Step 4: Simplify right side
   9,109.38x = 120,134,278.24
5. Step 5: Solve for x
   x = 120,134,278.24/9,109.38
6. Step 6: Final answer
   x = 13,187.98