Finding the Fourth Proportional to 22,077.02, 30,456.06 and 12,640.52

Step by Step Solution

1. Step 1: Write the proportion equation
   22,077.02 : 30,456.06 = 12,640.52 : x
2. Step 2: Convert to fraction form
   22,077.02/30,456.06 = 12,640.52/x
3. Step 3: Cross multiply
   22,077.02x = 30,456.06 × 12,640.52
4. Step 4: Simplify right side
   22,077.02x = 384,980,435.55
5. Step 5: Solve for x
   x = 384,980,435.55/22,077.02
6. Step 6: Final answer
   x = 17,438.06