Finding the Fourth Proportional to 13,465.63, 18,586.78 and 8,091.99

Step by Step Solution

1. Step 1: Write the proportion equation
   13,465.63 : 18,586.78 = 8,091.99 : x
2. Step 2: Convert to fraction form
   13,465.63/18,586.78 = 8,091.99/x
3. Step 3: Cross multiply
   13,465.63x = 18,586.78 × 8,091.99
4. Step 4: Simplify right side
   13,465.63x = 150,404,037.89
5. Step 5: Solve for x
   x = 150,404,037.89/13,465.63
6. Step 6: Final answer
   x = 11,169.48