Finding the Fourth Proportional to 9,168.74, 12,604.22 and 7,887.95

Step by Step Solution

1. Step 1: Write the proportion equation
   9,168.74 : 12,604.22 = 7,887.95 : x
2. Step 2: Convert to fraction form
   9,168.74/12,604.22 = 7,887.95/x
3. Step 3: Cross multiply
   9,168.74x = 12,604.22 × 7,887.95
4. Step 4: Simplify right side
   9,168.74x = 99,421,354.69
5. Step 5: Solve for x
   x = 99,421,354.69/9,168.74
6. Step 6: Final answer
   x = 10,843.51