Finding the Fourth Proportional to 10,973.26, 16,439.22 and 5,420.10

Step by Step Solution

1. Step 1: Write the proportion equation
   10,973.26 : 16,439.22 = 5,420.10 : x
2. Step 2: Convert to fraction form
   10,973.26/16,439.22 = 5,420.10/x
3. Step 3: Cross multiply
   10,973.26x = 16,439.22 × 5,420.10
4. Step 4: Simplify right side
   10,973.26x = 89,102,216.32
5. Step 5: Solve for x
   x = 89,102,216.32/10,973.26
6. Step 6: Final answer
   x = 8,119.94