Finding the Fourth Proportional to 12,327.20, 18,493.20 and 5,307.20

Step by Step Solution

1. Step 1: Write the proportion equation
   12,327.20 : 18,493.20 = 5,307.20 : x
2. Step 2: Convert to fraction form
   12,327.20/18,493.20 = 5,307.20/x
3. Step 3: Cross multiply
   12,327.20x = 18,493.20 × 5,307.20
4. Step 4: Simplify right side
   12,327.20x = 98,147,111.04
5. Step 5: Solve for x
   x = 98,147,111.04/12,327.20
6. Step 6: Final answer
   x = 7,961.83