Finding the Fourth Proportional to 9,153.99, 12,630.86 and 7,893.73

Step by Step Solution

1. Step 1: Write the proportion equation
   9,153.99 : 12,630.86 = 7,893.73 : x
2. Step 2: Convert to fraction form
   9,153.99/12,630.86 = 7,893.73/x
3. Step 3: Cross multiply
   9,153.99x = 12,630.86 × 7,893.73
4. Step 4: Simplify right side
   9,153.99x = 99,704,598.51
5. Step 5: Solve for x
   x = 99,704,598.51/9,153.99
6. Step 6: Final answer
   x = 10,891.93