Finding the Fourth Proportional to 13,422.79, 18,522.82 and 7,454.83

Step by Step Solution

1. Step 1: Write the proportion equation
   13,422.79 : 18,522.82 = 7,454.83 : x
2. Step 2: Convert to fraction form
   13,422.79/18,522.82 = 7,454.83/x
3. Step 3: Cross multiply
   13,422.79x = 18,522.82 × 7,454.83
4. Step 4: Simplify right side
   13,422.79x = 138,084,474.22
5. Step 5: Solve for x
   x = 138,084,474.22/13,422.79
6. Step 6: Final answer
   x = 10,287.32