Finding the Fourth Proportional to 9,168.24, 12,603.53 and 7,887.45

Step by Step Solution

1. Step 1: Write the proportion equation
   9,168.24 : 12,603.53 = 7,887.45 : x
2. Step 2: Convert to fraction form
   9,168.24/12,603.53 = 7,887.45/x
3. Step 3: Cross multiply
   9,168.24x = 12,603.53 × 7,887.45
4. Step 4: Simplify right side
   9,168.24x = 99,409,712.70
5. Step 5: Solve for x
   x = 99,409,712.70/9,168.24
6. Step 6: Final answer
   x = 10,842.83