Finding the Fourth Proportional to 13,415.12, 18,499.98 and 8,036.71

Step by Step Solution

1. Step 1: Write the proportion equation
   13,415.12 : 18,499.98 = 8,036.71 : x
2. Step 2: Convert to fraction form
   13,415.12/18,499.98 = 8,036.71/x
3. Step 3: Cross multiply
   13,415.12x = 18,499.98 × 8,036.71
4. Step 4: Simplify right side
   13,415.12x = 148,678,974.27
5. Step 5: Solve for x
   x = 148,678,974.27/13,415.12
6. Step 6: Final answer
   x = 11,082.94