Finding the Fourth Proportional to 13,663.72, 20,499.90 and 5,344.84

Step by Step Solution

1. Step 1: Write the proportion equation
   13,663.72 : 20,499.90 = 5,344.84 : x
2. Step 2: Convert to fraction form
   13,663.72/20,499.90 = 5,344.84/x
3. Step 3: Cross multiply
   13,663.72x = 20,499.90 × 5,344.84
4. Step 4: Simplify right side
   13,663.72x = 109,568,685.52
5. Step 5: Solve for x
   x = 109,568,685.52/13,663.72
6. Step 6: Final answer
   x = 8,018.95