Finding the Fourth Proportional to 13,422.66, 18,522.42 and 7,453.98

Step by Step Solution

1. Step 1: Write the proportion equation
   13,422.66 : 18,522.42 = 7,453.98 : x
2. Step 2: Convert to fraction form
   13,422.66/18,522.42 = 7,453.98/x
3. Step 3: Cross multiply
   13,422.66x = 18,522.42 × 7,453.98
4. Step 4: Simplify right side
   13,422.66x = 138,065,748.23
5. Step 5: Solve for x
   x = 138,065,748.23/13,422.66
6. Step 6: Final answer
   x = 10,286.02