Finding the Fourth Proportional to 9,077.49, 12,528.30 and 5,542.74

Step by Step Solution

1. Step 1: Write the proportion equation
   9,077.49 : 12,528.30 = 5,542.74 : x
2. Step 2: Convert to fraction form
   9,077.49/12,528.30 = 5,542.74/x
3. Step 3: Cross multiply
   9,077.49x = 12,528.30 × 5,542.74
4. Step 4: Simplify right side
   9,077.49x = 69,441,109.54
5. Step 5: Solve for x
   x = 69,441,109.54/9,077.49
6. Step 6: Final answer
   x = 7,649.81