Finding the Fourth Proportional to 12,320.37, 18,488.43 and 4,422.71

Step by Step Solution

1. Step 1: Write the proportion equation
   12,320.37 : 18,488.43 = 4,422.71 : x
2. Step 2: Convert to fraction form
   12,320.37/18,488.43 = 4,422.71/x
3. Step 3: Cross multiply
   12,320.37x = 18,488.43 × 4,422.71
4. Step 4: Simplify right side
   12,320.37x = 81,769,024.03
5. Step 5: Solve for x
   x = 81,769,024.03/12,320.37
6. Step 6: Final answer
   x = 6,636.90