Finding the Fourth Proportional to 9,339.45, 12,887.40 and 5,562.09

Step by Step Solution

1. Step 1: Write the proportion equation
   9,339.45 : 12,887.40 = 5,562.09 : x
2. Step 2: Convert to fraction form
   9,339.45/12,887.40 = 5,562.09/x
3. Step 3: Cross multiply
   9,339.45x = 12,887.40 × 5,562.09
4. Step 4: Simplify right side
   9,339.45x = 71,680,814.23
5. Step 5: Solve for x
   x = 71,680,814.23/9,339.45
6. Step 6: Final answer
   x = 7,675.06