Finding the Fourth Proportional to 13,836.56, 19,082.59 and 9,115.88

Step by Step Solution

1. Step 1: Write the proportion equation
   13,836.56 : 19,082.59 = 9,115.88 : x
2. Step 2: Convert to fraction form
   13,836.56/19,082.59 = 9,115.88/x
3. Step 3: Cross multiply
   13,836.56x = 19,082.59 × 9,115.88
4. Step 4: Simplify right side
   13,836.56x = 173,954,482.33
5. Step 5: Solve for x
   x = 173,954,482.33/13,836.56
6. Step 6: Final answer
   x = 12,572.09