Finding the Fourth Proportional to 22,059.58, 30,442.12 and 12,499.45

Step by Step Solution

1. Step 1: Write the proportion equation
   22,059.58 : 30,442.12 = 12,499.45 : x
2. Step 2: Convert to fraction form
   22,059.58/30,442.12 = 12,499.45/x
3. Step 3: Cross multiply
   22,059.58x = 30,442.12 × 12,499.45
4. Step 4: Simplify right side
   22,059.58x = 380,509,756.83
5. Step 5: Solve for x
   x = 380,509,756.83/22,059.58
6. Step 6: Final answer
   x = 17,249.18