Finding the Fourth Proportional to 9,417.98, 12,996.25 and 5,643.11

Step by Step Solution

1. Step 1: Write the proportion equation
   9,417.98 : 12,996.25 = 5,643.11 : x
2. Step 2: Convert to fraction form
   9,417.98/12,996.25 = 5,643.11/x
3. Step 3: Cross multiply
   9,417.98x = 12,996.25 × 5,643.11
4. Step 4: Simplify right side
   9,417.98x = 73,339,286.72
5. Step 5: Solve for x
   x = 73,339,286.72/9,417.98
6. Step 6: Final answer
   x = 7,787.15