Finding the Fourth Proportional to 21,540.18, 32,298.12 and 8,377.49

Step by Step Solution

1. Step 1: Write the proportion equation
   21,540.18 : 32,298.12 = 8,377.49 : x
2. Step 2: Convert to fraction form
   21,540.18/32,298.12 = 8,377.49/x
3. Step 3: Cross multiply
   21,540.18x = 32,298.12 × 8,377.49
4. Step 4: Simplify right side
   21,540.18x = 270,577,015.83
5. Step 5: Solve for x
   x = 270,577,015.83/21,540.18
6. Step 6: Final answer
   x = 12,561.50