Finding the Fourth Proportional to 22,947.10, 34,430.97 and 12,404.78

Step by Step Solution

1. Step 1: Write the proportion equation
   22,947.10 : 34,430.97 = 12,404.78 : x
2. Step 2: Convert to fraction form
   22,947.10/34,430.97 = 12,404.78/x
3. Step 3: Cross multiply
   22,947.10x = 34,430.97 × 12,404.78
4. Step 4: Simplify right side
   22,947.10x = 427,108,608.04
5. Step 5: Solve for x
   x = 427,108,608.04/22,947.10
6. Step 6: Final answer
   x = 18,612.75