Finding the Fourth Proportional to 13,060.63, 18,016.59 and 8,271.91

Step by Step Solution

1. Step 1: Write the proportion equation
   13,060.63 : 18,016.59 = 8,271.91 : x
2. Step 2: Convert to fraction form
   13,060.63/18,016.59 = 8,271.91/x
3. Step 3: Cross multiply
   13,060.63x = 18,016.59 × 8,271.91
4. Step 4: Simplify right side
   13,060.63x = 149,031,610.99
5. Step 5: Solve for x
   x = 149,031,610.99/13,060.63
6. Step 6: Final answer
   x = 11,410.75