Finding the Fourth Proportional to 12,002.67, 18,007.86 and 4,986.05

Step by Step Solution

1. Step 1: Write the proportion equation
   12,002.67 : 18,007.86 = 4,986.05 : x
2. Step 2: Convert to fraction form
   12,002.67/18,007.86 = 4,986.05/x
3. Step 3: Cross multiply
   12,002.67x = 18,007.86 × 4,986.05
4. Step 4: Simplify right side
   12,002.67x = 89,788,000.31
5. Step 5: Solve for x
   x = 89,788,000.31/12,002.67
6. Step 6: Final answer
   x = 7,480.67