Finding the Fourth Proportional to 9,988.83, 13,789.41 and 7,745.52

Step by Step Solution

1. Step 1: Write the proportion equation
   9,988.83 : 13,789.41 = 7,745.52 : x
2. Step 2: Convert to fraction form
   9,988.83/13,789.41 = 7,745.52/x
3. Step 3: Cross multiply
   9,988.83x = 13,789.41 × 7,745.52
4. Step 4: Simplify right side
   9,988.83x = 106,806,150.94
5. Step 5: Solve for x
   x = 106,806,150.94/9,988.83
6. Step 6: Final answer
   x = 10,692.56