Finding the Fourth Proportional to 22,380, 30,885.30 and 13,424.24

Step by Step Solution

1. Step 1: Write the proportion equation
   22,380 : 30,885.30 = 13,424.24 : x
2. Step 2: Convert to fraction form
   22,380/30,885.30 = 13,424.24/x
3. Step 3: Cross multiply
   22,380x = 30,885.30 × 13,424.24
4. Step 4: Simplify right side
   22,380x = 414,611,679.67
5. Step 5: Solve for x
   x = 414,611,679.67/22,380
6. Step 6: Final answer
   x = 18,525.99