Finding the Fourth Proportional to 9,043.22, 12,478.99 and 5,507.57

Step by Step Solution

1. Step 1: Write the proportion equation
   9,043.22 : 12,478.99 = 5,507.57 : x
2. Step 2: Convert to fraction form
   9,043.22/12,478.99 = 5,507.57/x
3. Step 3: Cross multiply
   9,043.22x = 12,478.99 × 5,507.57
4. Step 4: Simplify right side
   9,043.22x = 68,728,910.95
5. Step 5: Solve for x
   x = 68,728,910.95/9,043.22
6. Step 6: Final answer
   x = 7,600.05