Finding the Fourth Proportional to 7,238.42, 10,058.05 and 7,209.26

Step by Step Solution

1. Step 1: Write the proportion equation
   7,238.42 : 10,058.05 = 7,209.26 : x
2. Step 2: Convert to fraction form
   7,238.42/10,058.05 = 7,209.26/x
3. Step 3: Cross multiply
   7,238.42x = 10,058.05 × 7,209.26
4. Step 4: Simplify right side
   7,238.42x = 72,511,061.50
5. Step 5: Solve for x
   x = 72,511,061.50/7,238.42
6. Step 6: Final answer
   x = 10,017.53