Finding the Fourth Proportional to 16,419.81, 24,621.98 and 5,320.33

Step by Step Solution

1. Step 1: Write the proportion equation
   16,419.81 : 24,621.98 = 5,320.33 : x
2. Step 2: Convert to fraction form
   16,419.81/24,621.98 = 5,320.33/x
3. Step 3: Cross multiply
   16,419.81x = 24,621.98 × 5,320.33
4. Step 4: Simplify right side
   16,419.81x = 130,997,109.20
5. Step 5: Solve for x
   x = 130,997,109.20/16,419.81
6. Step 6: Final answer
   x = 7,977.99