Finding the Fourth Proportional to 13,104.42, 18,085.34 and 8,071.58

Step by Step Solution

1. Step 1: Write the proportion equation
   13,104.42 : 18,085.34 = 8,071.58 : x
2. Step 2: Convert to fraction form
   13,104.42/18,085.34 = 8,071.58/x
3. Step 3: Cross multiply
   13,104.42x = 18,085.34 × 8,071.58
4. Step 4: Simplify right side
   13,104.42x = 145,977,137.85
5. Step 5: Solve for x
   x = 145,977,137.85/13,104.42
6. Step 6: Final answer
   x = 11,139.53