Finding the Fourth Proportional to 12,328.56, 18,495.24 and 5,403

Step by Step Solution

1. Step 1: Write the proportion equation
   12,328.56 : 18,495.24 = 5,403 : x
2. Step 2: Convert to fraction form
   12,328.56/18,495.24 = 5,403/x
3. Step 3: Cross multiply
   12,328.56x = 18,495.24 × 5,403
4. Step 4: Simplify right side
   12,328.56x = 99,929,781.72
5. Step 5: Solve for x
   x = 99,929,781.72/12,328.56
6. Step 6: Final answer
   x = 8,105.55