Finding the Fourth Proportional to 9,351.61, 12,907.89 and 5,526.79

Step by Step Solution

1. Step 1: Write the proportion equation
   9,351.61 : 12,907.89 = 5,526.79 : x
2. Step 2: Convert to fraction form
   9,351.61/12,907.89 = 5,526.79/x
3. Step 3: Cross multiply
   9,351.61x = 12,907.89 × 5,526.79
4. Step 4: Simplify right side
   9,351.61x = 71,339,165.10
5. Step 5: Solve for x
   x = 71,339,165.10/9,351.61
6. Step 6: Final answer
   x = 7,628.55