Finding the Fourth Proportional to 16,521.40, 24,783.72 and 5,427.64

Step by Step Solution

1. Step 1: Write the proportion equation
   16,521.40 : 24,783.72 = 5,427.64 : x
2. Step 2: Convert to fraction form
   16,521.40/24,783.72 = 5,427.64/x
3. Step 3: Cross multiply
   16,521.40x = 24,783.72 × 5,427.64
4. Step 4: Simplify right side
   16,521.40x = 134,517,110.02
5. Step 5: Solve for x
   x = 134,517,110.02/16,521.40
6. Step 6: Final answer
   x = 8,141.99