Finding the Fourth Proportional to 7,938.39, 11,909.90 and 3,554.82

Step by Step Solution

1. Step 1: Write the proportion equation
   7,938.39 : 11,909.90 = 3,554.82 : x
2. Step 2: Convert to fraction form
   7,938.39/11,909.90 = 3,554.82/x
3. Step 3: Cross multiply
   7,938.39x = 11,909.90 × 3,554.82
4. Step 4: Simplify right side
   7,938.39x = 42,337,550.72
5. Step 5: Solve for x
   x = 42,337,550.72/7,938.39
6. Step 6: Final answer
   x = 5,333.27