Finding the Fourth Proportional to 13,282.81, 18,330.84 and 7,619.15

Step by Step Solution

1. Step 1: Write the proportion equation
   13,282.81 : 18,330.84 = 7,619.15 : x
2. Step 2: Convert to fraction form
   13,282.81/18,330.84 = 7,619.15/x
3. Step 3: Cross multiply
   13,282.81x = 18,330.84 × 7,619.15
4. Step 4: Simplify right side
   13,282.81x = 139,665,465.41
5. Step 5: Solve for x
   x = 139,665,465.41/13,282.81
6. Step 6: Final answer
   x = 10,514.75