Finding the Fourth Proportional to 22,012, 30,375.76 and 12,580

Step by Step Solution

1. Step 1: Write the proportion equation
   22,012 : 30,375.76 = 12,580 : x
2. Step 2: Convert to fraction form
   22,012/30,375.76 = 12,580/x
3. Step 3: Cross multiply
   22,012x = 30,375.76 × 12,580
4. Step 4: Simplify right side
   22,012x = 382,127,060.80
5. Step 5: Solve for x
   x = 382,127,060.80/22,012
6. Step 6: Final answer
   x = 17,359.94