Finding the Fourth Proportional to 9,077.74, 12,528.64 and 5,543

Step by Step Solution

1. Step 1: Write the proportion equation
   9,077.74 : 12,528.64 = 5,543 : x
2. Step 2: Convert to fraction form
   9,077.74/12,528.64 = 5,543/x
3. Step 3: Cross multiply
   9,077.74x = 12,528.64 × 5,543
4. Step 4: Simplify right side
   9,077.74x = 69,446,251.52
5. Step 5: Solve for x
   x = 69,446,251.52/9,077.74
6. Step 6: Final answer
   x = 7,650.17