Finding the Fourth Proportional to 12,071.50, 18,109.68 and 4,174.32

Step by Step Solution

1. Step 1: Write the proportion equation
   12,071.50 : 18,109.68 = 4,174.32 : x
2. Step 2: Convert to fraction form
   12,071.50/18,109.68 = 4,174.32/x
3. Step 3: Cross multiply
   12,071.50x = 18,109.68 × 4,174.32
4. Step 4: Simplify right side
   12,071.50x = 75,595,599.42
5. Step 5: Solve for x
   x = 75,595,599.42/12,071.50
6. Step 6: Final answer
   x = 6,262.32