Finding the Fourth Proportional to 13,362.10, 18,445.58 and 7,986.42

Step by Step Solution

1. Step 1: Write the proportion equation
   13,362.10 : 18,445.58 = 7,986.42 : x
2. Step 2: Convert to fraction form
   13,362.10/18,445.58 = 7,986.42/x
3. Step 3: Cross multiply
   13,362.10x = 18,445.58 × 7,986.42
4. Step 4: Simplify right side
   13,362.10x = 147,314,149.02
5. Step 5: Solve for x
   x = 147,314,149.02/13,362.10
6. Step 6: Final answer
   x = 11,024.78