Finding the Fourth Proportional to 22,330.10, 33,443.79 and 12,447.50

Step by Step Solution

1. Step 1: Write the proportion equation
   22,330.10 : 33,443.79 = 12,447.50 : x
2. Step 2: Convert to fraction form
   22,330.10/33,443.79 = 12,447.50/x
3. Step 3: Cross multiply
   22,330.10x = 33,443.79 × 12,447.50
4. Step 4: Simplify right side
   22,330.10x = 416,291,408.81
5. Step 5: Solve for x
   x = 416,291,408.81/22,330.10
6. Step 6: Final answer
   x = 18,642.62