Finding the Fourth Proportional to 11,456.33, 15,788.33 and 8,934.45

Step by Step Solution

1. Step 1: Write the proportion equation
   11,456.33 : 15,788.33 = 8,934.45 : x
2. Step 2: Convert to fraction form
   11,456.33/15,788.33 = 8,934.45/x
3. Step 3: Cross multiply
   11,456.33x = 15,788.33 × 8,934.45
4. Step 4: Simplify right side
   11,456.33x = 141,060,000.30
5. Step 5: Solve for x
   x = 141,060,000.30/11,456.33
6. Step 6: Final answer
   x = 12,312.85