Finding the Fourth Proportional to 22,070.48, 30,458.28 and 12,380.88

Step by Step Solution

1. Step 1: Write the proportion equation
   22,070.48 : 30,458.28 = 12,380.88 : x
2. Step 2: Convert to fraction form
   22,070.48/30,458.28 = 12,380.88/x
3. Step 3: Cross multiply
   22,070.48x = 30,458.28 × 12,380.88
4. Step 4: Simplify right side
   22,070.48x = 377,100,309.69
5. Step 5: Solve for x
   x = 377,100,309.69/22,070.48
6. Step 6: Final answer
   x = 17,086.19