Finding the Fourth Proportional to 9,789.88, 13,511.20 and 5,483.38

Step by Step Solution

1. Step 1: Write the proportion equation
   9,789.88 : 13,511.20 = 5,483.38 : x
2. Step 2: Convert to fraction form
   9,789.88/13,511.20 = 5,483.38/x
3. Step 3: Cross multiply
   9,789.88x = 13,511.20 × 5,483.38
4. Step 4: Simplify right side
   9,789.88x = 74,087,043.86
5. Step 5: Solve for x
   x = 74,087,043.86/9,789.88
6. Step 6: Final answer
   x = 7,567.72