Finding the Fourth Proportional to 12,348.64, 18,522.72 and 3,114.56

Step by Step Solution

1. Step 1: Write the proportion equation
   12,348.64 : 18,522.72 = 3,114.56 : x
2. Step 2: Convert to fraction form
   12,348.64/18,522.72 = 3,114.56/x
3. Step 3: Cross multiply
   12,348.64x = 18,522.72 × 3,114.56
4. Step 4: Simplify right side
   12,348.64x = 57,690,122.80
5. Step 5: Solve for x
   x = 57,690,122.80/12,348.64
6. Step 6: Final answer
   x = 4,671.78