Finding the Fourth Proportional to 13,516.38, 18,651.83 and 8,071.59

Step by Step Solution

1. Step 1: Write the proportion equation
   13,516.38 : 18,651.83 = 8,071.59 : x
2. Step 2: Convert to fraction form
   13,516.38/18,651.83 = 8,071.59/x
3. Step 3: Cross multiply
   13,516.38x = 18,651.83 × 8,071.59
4. Step 4: Simplify right side
   13,516.38x = 150,549,894.24
5. Step 5: Solve for x
   x = 150,549,894.24/13,516.38
6. Step 6: Final answer
   x = 11,138.33