Finding the Fourth Proportional to 22,019.65, 30,388.61 and 12,459.53

Step by Step Solution

1. Step 1: Write the proportion equation
   22,019.65 : 30,388.61 = 12,459.53 : x
2. Step 2: Convert to fraction form
   22,019.65/30,388.61 = 12,459.53/x
3. Step 3: Cross multiply
   22,019.65x = 30,388.61 × 12,459.53
4. Step 4: Simplify right side
   22,019.65x = 378,627,797.95
5. Step 5: Solve for x
   x = 378,627,797.95/22,019.65
6. Step 6: Final answer
   x = 17,195.00