Finding the Fourth Proportional to 13,422.22, 18,520.69 and 7,453.94

Step by Step Solution

1. Step 1: Write the proportion equation
   13,422.22 : 18,520.69 = 7,453.94 : x
2. Step 2: Convert to fraction form
   13,422.22/18,520.69 = 7,453.94/x
3. Step 3: Cross multiply
   13,422.22x = 18,520.69 × 7,453.94
4. Step 4: Simplify right side
   13,422.22x = 138,052,112.02
5. Step 5: Solve for x
   x = 138,052,112.02/13,422.22
6. Step 6: Final answer
   x = 10,285.34