Finding the Fourth Proportional to 9,123.30, 12,511.62 and 8,744.58

Step by Step Solution

1. Step 1: Write the proportion equation
   9,123.30 : 12,511.62 = 8,744.58 : x
2. Step 2: Convert to fraction form
   9,123.30/12,511.62 = 8,744.58/x
3. Step 3: Cross multiply
   9,123.30x = 12,511.62 × 8,744.58
4. Step 4: Simplify right side
   9,123.30x = 109,408,862.02
5. Step 5: Solve for x
   x = 109,408,862.02/9,123.30
6. Step 6: Final answer
   x = 11,992.25