Finding the Fourth Proportional to 9,418.27, 12,996.61 and 5,385.52

Step by Step Solution

1. Step 1: Write the proportion equation
   9,418.27 : 12,996.61 = 5,385.52 : x
2. Step 2: Convert to fraction form
   9,418.27/12,996.61 = 5,385.52/x
3. Step 3: Cross multiply
   9,418.27x = 12,996.61 × 5,385.52
4. Step 4: Simplify right side
   9,418.27x = 69,993,503.09
5. Step 5: Solve for x
   x = 69,993,503.09/9,418.27
6. Step 6: Final answer
   x = 7,431.67