Finding the Fourth Proportional to 9,019.81, 12,447.25 and 4,986.91

Step by Step Solution

1. Step 1: Write the proportion equation
   9,019.81 : 12,447.25 = 4,986.91 : x
2. Step 2: Convert to fraction form
   9,019.81/12,447.25 = 4,986.91/x
3. Step 3: Cross multiply
   9,019.81x = 12,447.25 × 4,986.91
4. Step 4: Simplify right side
   9,019.81x = 62,073,315.50
5. Step 5: Solve for x
   x = 62,073,315.50/9,019.81
6. Step 6: Final answer
   x = 6,881.89