Finding the Fourth Proportional to 22,142.45, 30,556.70 and 12,070.91

Step by Step Solution

1. Step 1: Write the proportion equation
   22,142.45 : 30,556.70 = 12,070.91 : x
2. Step 2: Convert to fraction form
   22,142.45/30,556.70 = 12,070.91/x
3. Step 3: Cross multiply
   22,142.45x = 30,556.70 × 12,070.91
4. Step 4: Simplify right side
   22,142.45x = 368,846,962.46
5. Step 5: Solve for x
   x = 368,846,962.46/22,142.45
6. Step 6: Final answer
   x = 16,657.91