Finding the Fourth Proportional to 13,422.52, 18,522.72 and 7,453.98

Step by Step Solution

1. Step 1: Write the proportion equation
   13,422.52 : 18,522.72 = 7,453.98 : x
2. Step 2: Convert to fraction form
   13,422.52/18,522.72 = 7,453.98/x
3. Step 3: Cross multiply
   13,422.52x = 18,522.72 × 7,453.98
4. Step 4: Simplify right side
   13,422.52x = 138,067,984.43
5. Step 5: Solve for x
   x = 138,067,984.43/13,422.52
6. Step 6: Final answer
   x = 10,286.29