Finding the Fourth Proportional to 9,354.87, 12,897.32 and 7,755.48

Step by Step Solution

1. Step 1: Write the proportion equation
   9,354.87 : 12,897.32 = 7,755.48 : x
2. Step 2: Convert to fraction form
   9,354.87/12,897.32 = 7,755.48/x
3. Step 3: Cross multiply
   9,354.87x = 12,897.32 × 7,755.48
4. Step 4: Simplify right side
   9,354.87x = 100,024,868.54
5. Step 5: Solve for x
   x = 100,024,868.54/9,354.87
6. Step 6: Final answer
   x = 10,692.28