Finding the Fourth Proportional to 12,086.67, 18,127.50 and 3,319.53

Step by Step Solution

1. Step 1: Write the proportion equation
   12,086.67 : 18,127.50 = 3,319.53 : x
2. Step 2: Convert to fraction form
   12,086.67/18,127.50 = 3,319.53/x
3. Step 3: Cross multiply
   12,086.67x = 18,127.50 × 3,319.53
4. Step 4: Simplify right side
   12,086.67x = 60,174,801.62
5. Step 5: Solve for x
   x = 60,174,801.62/12,086.67
6. Step 6: Final answer
   x = 4,978.61