Finding the Fourth Proportional to 9,124.49, 12,592.76 and 5,539.43

Step by Step Solution

1. Step 1: Write the proportion equation
   9,124.49 : 12,592.76 = 5,539.43 : x
2. Step 2: Convert to fraction form
   9,124.49/12,592.76 = 5,539.43/x
3. Step 3: Cross multiply
   9,124.49x = 12,592.76 × 5,539.43
4. Step 4: Simplify right side
   9,124.49x = 69,756,621.87
5. Step 5: Solve for x
   x = 69,756,621.87/9,124.49
6. Step 6: Final answer
   x = 7,644.99