Finding the Fourth Proportional to 7,242.90, 9,993.89 and 4,259.33

Step by Step Solution

1. Step 1: Write the proportion equation
   7,242.90 : 9,993.89 = 4,259.33 : x
2. Step 2: Convert to fraction form
   7,242.90/9,993.89 = 4,259.33/x
3. Step 3: Cross multiply
   7,242.90x = 9,993.89 × 4,259.33
4. Step 4: Simplify right side
   7,242.90x = 42,567,204.23
5. Step 5: Solve for x
   x = 42,567,204.23/7,242.90
6. Step 6: Final answer
   x = 5,877.09