Finding the Fourth Proportional to 10,839.42, 16,261.74 and 5,572.26

Step by Step Solution

1. Step 1: Write the proportion equation
   10,839.42 : 16,261.74 = 5,572.26 : x
2. Step 2: Convert to fraction form
   10,839.42/16,261.74 = 5,572.26/x
3. Step 3: Cross multiply
   10,839.42x = 16,261.74 × 5,572.26
4. Step 4: Simplify right side
   10,839.42x = 90,614,643.33
5. Step 5: Solve for x
   x = 90,614,643.33/10,839.42
6. Step 6: Final answer
   x = 8,359.73