Finding the Fourth Proportional to 8,894.78, 13,342.15 and 8,353.50

Step by Step Solution

1. Step 1: Write the proportion equation
   8,894.78 : 13,342.15 = 8,353.50 : x
2. Step 2: Convert to fraction form
   8,894.78/13,342.15 = 8,353.50/x
3. Step 3: Cross multiply
   8,894.78x = 13,342.15 × 8,353.50
4. Step 4: Simplify right side
   8,894.78x = 111,453,610.43
5. Step 5: Solve for x
   x = 111,453,610.43/8,894.78
6. Step 6: Final answer
   x = 12,530.23